“Pilaf” (U.S. spelling) is a rice dish that is spelled “pilau” in the United Kingdom, and, of course, there are “pillow” jokes.
     
“I slept in a bed of rice last night.  I was asleep as soon as my head hit the Pilau” was posted on Twitter by Andy Doughnut on December 31, 2010. “I SLEPT in a bed of rice last night. I was asleep as soon as my head hit the pilau” was printed in The Sun (London, UK) on January 1, 2011.
     
“Last night I fell asleep on a bed of rice. I was out as soon as my head hit the pilau” was posted on sickipediabot on March 10, 2011. “I woke up with a face full of rice.I must have fell asleep as my head hit the pilau” was posted on Twitter by Sickipedia_Feed on March 6, 2013. These versions originated on the Sickipedia website.
   
       
Wikipedia: Pilaf
Pilaf (US spelling) or pilau (UK spelling) is a rice dish or, in some regions, a wheat dish, whose recipe usually involves cooking in stock or broth, adding spices, and other ingredients such as vegetables or meat, and employing some technique for achieving cooked grains that do not adhere.
         
Twitter
Austen Duffy
@austenduffy
Replying to @IanhEkko
@Ianhlhm I was exhausted after the shoot and out like a light as soon as my head hit the pilau… 😉
2:57 AM · Aug 2, 2010·Twitter Web Client
 
Twitter 
Andy Doughnut
@OrientMeatPie
I slept in a bed of rice last night.  I was asleep as soon as my head hit the Pilau.
2:12 PM · Dec 31, 2010·twidroyd (original)
   
Twitter
Colin McAlpine
@artronpumps
I slept in a bed of rice last night. I was asleep as soon as my head hit the Pilau.
@Julieb100
3:57 PM · Dec 31, 2010·TweetDeck
 
1 January 2011, The Sun (London, UK), “Have a Laugh,” pg. 23:
I SLEPT in a bed of rice last night. I was asleep as soon as my head hit the pilau.
         
Twitter
J C
@ea3y
“Last night I fell asleep on a bed of rice. I was out as soon as my head hit the pilau.”
12:06 PM · Mar 9, 2011·Twitter Web Client
 
Twitter
sickipediabot
@sickipediabot
Last night I fell asleep on a bed of rice. I was out as soon as my head hit the pilau.
4:46 AM · Mar 10, 2011·sickipediabot
 
Twitter
Sickipedia_Feed
@Sickipedia_Feed
I woke up with a face full of rice.I must have fell asleep as my head hit the pilau http://bit.ly/14vzzlc
9:03 PM · Mar 6, 2013·twitterfeed
 
Twitter
sickipediabot
@sickipediabot
I woke up with a face full of rice.
I must have fell asleep as my head hit the pilau
3:20 AM · Mar 7, 2013·sickipediabot
 
Twitter
Bad Dad Jokes
@baddadjokes
I woke up with a face full of rice. I must’ve fallen asleep as soon as my head hit the pilau.
4:21 AM · Mar 7, 2013·Twitter for iPhone
         
23 October 2013, The Herald (Glasgow, Scotland), “One’s number is up: Hungry for love” by Ken Smith, pg. 13:
Pilau talk
A BOISTEROUS stag night ended in a Glasgow Indian restaurant where the groom fell asleep while eating his meal. When he came to and asked his mates if he had been asleep long, his best man rather wittily told him: “You were out for the count as soon as your head hit the pilau.”
   
Twitter
Shit Jokes
@ShitJokes
I woke up with a face full of rice.
I must’ve fallen asleep as soon as my head hit the pilau.
7:12 AM · Nov 28, 2015·Twitter for Android
 
Twitter
Shit Jokes
@ShitJokes
I woke up with a face full of rice.
I must have fallen asleep as soon as my head hit the pilau.
8:48 AM · Apr 29, 2018·Twitter for Android
   
15 January 2019, Daily News (Warwick, Queensland), “Today’s Jokes, pg. 2:
I WOKE up with a face full of rice.
I must’ve fallen asleep as soon as my head hit the pilau.
 
Twitter
The Dad Joke Man
@DadJokeMan
Last night I fell asleep on a bed of rice.
I was asleep as soon as my head hit the pilau.
#InternationalJokeDay
9:37 AM · Jul 1, 2019·Twitter for iPhone
 
Twitter
The Dad Joke Man
@DadJokeMan
Last night I fell asleep on a bed of rice…
I was asleep as soon as my head hit the pilau.
#SundayMorning
4:36 AM · Aug 30, 2020·Twitter for iPhone