“A guy walks into a bar…”  is a typical form of what has been called the “bar joke.” One version involves three little pigs. One little pig walks into the bar, takes a drink, and asks for the bathroom. A second little pig walks into a bar, takes a drink, and asks for the bathroom. A third little pig walks into a bar and takes a drink. The bartender asks, “Don’t you want to know where the bathroom is?” The third pig replies, “No. I’m the one that goes ‘wee-wee-wee’ all the way home.”
 
Another version has just one pig who takes about nine or ten drinks. “And this little piggy cried wee wee wee all the way home” is the last line of a classic nursery rhyme. The joke was posted to the newsgroup rec.food.cooking on March 1, 1995.
 
       
Wikipedia: This Little Piggy
“This Little Piggy” or “This little pig” is an English language nursery rhyme and fingerplay. It has a Roud Folk Song Index number of 19297.
(...)
This little piggy went to market,
This little piggy stayed home,
This little piggy had roast beef
This little piggy had none,
And this little piggy cried wee wee wee all the way home.
   
Google Groups: rec.food.cooking
Food Humor
Rob
3/1/95
(...).
Pig walks into a bar, orders a beer, drinks it, then asks for direction to the bathroom. “Down the hall on your left” says the bartender.
     
Second pig comes in, orders a beer, drinks it, and asks for directions to the bathroom. “Down the hall on your left” replies the bartender.
     
Third pig comes in, orders a beer, drinks it, and says “Where’s the bath…” “Down the hall on your left” The bartender interrupts.
     
Fourth pig comes in, orders a beer, and as he’s drinking it the bartneder says “the restroom is down the hall on your left.” “Thanks” says the pig as he finishes his beer and gets up.
     
Fifth pig comes in, bartender has a beer on the bar waiting for him when he gets up to it. As the pig nears the end of his beer, the bartender says “The restroom is down the hall on your left.” “Thanks,” replies the pig, “but I’m the one that goes ‘wee-wee-wee all the way home’.”
 
Google Groups: rec.humor
need pig jokes
Rain
4/23/95
> ‘nuf said….anyone???
 
Forgive me if this one was posted here before.
 
A pig goes into a bar.  He orders a drink and after two sips he asks the bartender where the bathroom is.
 
A few minutes later, a second pig enters, orders a drink and after a few sips asks the bartender where the bathroom is.
 
Soon after, a third little pig comes in, sits at the bar and orders a drink.  He sits there sipping it and the bartender comes up to him and asks, “Aren’t you going to ask me where the bathroom is?”
 
The pig replies, no, I am the pig that went “wee wee wee” all the way home.
 
Google Groups: alt.tasteless.jokes
Pigs in a bar
.(JavaScript must be enabled to view this email address)
7/31/96
Six pigs go into a bar.  All of them stay for about 3 hours, drinking as many drinks as they could. (Which was alot).  Five of the pigs use the bathroom quite often, but one of the pigs NEVER used the bathroom once during the time he was there.  The barender noticed this and went over and talked with the pig. “Say, just out of curiosity, why haven’t you used the john?”  The pig answers,“Because I’m the little pig that goes wee wee-wee all the way home!”
 
Google Groups: alt.tasteless.jokes
Pigs In A Bar
Tweet12547
2/24/00
A pig went into a bar and asked the bartender for a glass of water.  The bartender gave the pig the water and when the pig was done he asked the bartender if he could use the restroom.  The bartender said, “Sure.
It’s down the hall and to your right.” A little while later another pig went into the bar and asked the bartender for two glasses of water.  The bartender gave the pig the water and when the pig was done he asked the bartender if he could use the restroom.  The bartender said, “Sure.  It’s down the hall and to your right.”
 
Soon after, another pig went into the bar and asked the bartender for three glasses of water.  The bartender gave the pig the water and when the pig was done he asked the bartender if he could use the restroom. The bartender said, “Sure.  It’s down the hall and to your right.”
 
Then another pig went into the bar and asked the bartender for four glasses of water.  The bartender gave the pig the water and when the pig was done he asked the bartender if he could use the restroom.  The bartender said, “Sure.  It’s down the hall and to your right.”
 
After a little while another pig went into the bar and asked the bartender for five glasses of water.  The bartender gave the pig the water and the pig drank all five glasses and was about to leave when the bartender stopped him and said, “Wait a minute.  All these other pigs have come in here and drank between one and four glasses of water and they all needed to use the restroom.  But you drank five whole glasses of water.  Why don’t you need to use the restroom too?”
 
And the pig replied, “Don’t you know the story?  I’m the little pig that goes wee-wee-wee all the way home.”
 
Google Books
Man Walks into a Bar:
Over 6,000 of the Most Hilarious Jokes, Funniest Insults and Gut-Busting One-Liners
By Stephen Arnott and Mike Haskins
Berkeley, CA: Ulysses Press
2007
Pg. 115:
A little pig walks into a bar, orders a drink and asks direction to the restroom. The bartender tells him where it is and the pig hurries off to relieve himself. A second little pig then comes in, orders a drink and asks for the restroom. Again the bartender tells the pig where to go and the pig hurries away. A third little pig then appears and orders a drink. “I suppose you’ll want to know where the men’s room is,” says the bartender.  “No,” replies the pig. “I’m the one that goes wee-wee-wee all the way home.”
 
November 2007, DVM Newsmagazine, “The healing power of laughter” by Carl S. Osborne, pg. 14S, col. 3:
A pig walked into a bar, ordered 15 beers and drank them all. The bartender asked, “Would you like to know where the lavatory is?” “No thanks,” said the porcine.” I’m the little pig that goes wee-wee-wee all the way home.”
 
Google Books
The Best ‘A Man Walks Into A Bar’ Jokes
By Billy Brownless
ReadHowYouWant.com
2011
Pg. 90:
A pig walks into a bar and orders 10 drinks. he finishes them up and the bartender says, ‘Don’t you need to know where the toilet is?’
Pg. 91:
The pig says, ‘No, I’m the one who goes wee, wee, wee all the way home.’
 
Google Books
The Mammoth Book of One-Liners
By Geoff Tibballs
London: Constable & Robinson, Ltd
2012
Pg. ?:
A little pig goes into a bar and orders nine drinks.  After the last one, the bartender asks: “Do you want to know where the toilet is?” “No,” says the little pig. “I’m the one that goes wee, wee, wee, wee all the way home.”
 
Reddit
Once upon a time three little pigs walk into a bar.
submitted September 19, 2016 by D00FINSHMITZ
The first pig orders 10 beers, downs them, and then asks for the bathroom. The second pig orders 15 beers, downs them, and asks for the bathroom. The third pig orders 20 beers, downs them, and then sits there eating peanuts. “Aren’t you going to ask for the bathroom?” asks the bartender. “Nope. I’m the pig who goes wee-wee-wee all the way home.”