“ProHo” (like “Soho”) has been infrequently used as a neighborhood nickname for Prospect Heights, Brooklyn. The nickname has vulgar connotations (“pro ho” or “professional whore”) and is usually avoided by Prospect Heights residents and realtors.
     
“ProHo” appears to have been first suggested in March 2005.
     
 
Wikipedia: Prospect Heights, Brooklyn
Prospect Heights is a neighborhood in the New York City borough of Brooklyn, bounded by Flatbush Avenue to the west, Atlantic Avenue to the north, Eastern Parkway to the south, and, Washington Avenue to the east, at the end of Prospect Hill. However, real estate brokers with a vested interest often misrepresent the eastern boundary as being as far as Classon, Franklin, or even Bedford Avenues. In its northern section are the Atlantic Yards.
 
Compared to other Brooklyn neighborhoods, Prospect Heights is relatively small and is notable for its cultural diversity as well as its tree-lined streets. Prospect Heights is rapidly changing demographically, and its shifts are exemplified by a mixture of abandoned buildings and newly built luxury condos. 
 
Curbed
Prospect Heights Urged: Say No to ProHo
Thursday, March 31, 2005, by Lockhart
In Brooklyn, Prospect Heights neighborhood blog Daily Heights is having none of the cute-nicknaming of the neighborhood:
 
No more ‘ProHo.’ You have been WARNED. I am putting you yuppies on NOTICE: “The name of the neighbothood is PROSPECT HEIGHTS that is it no nickname needed ... You Yuppies may have ruined downtown brooklyn, by you ain’t gonna ruine Prosect Heights.”
 
But, as we know too well, cutesy neighborhood abbreviations cannot be stopped. Alternative suggestions from the Daily Heights message board: “JOOP (Just Outside Of the Park)”, “ToPoSlo (Too Poor to live in Park Slope).”
   
Curbed
‘Clinton’s Bed’: A Nice Place To Lay Your Head
Tuesday, May 10, 2005, by Lockhart
During a debate on the Daily Heights forum about the worthiness of ProHo as a neighborhood abbreviation for Prospect Heights (“It probably won’t end up on any maps or documents, like Soho. But it can end up on your chest, if you attend the Happy Hour!”), one poster shares an epiphany:
 
Along the same lines, I’ve been thinking of calling the area where Clinton Hill, Bed-Stuy and Prospect Heights meets (like centered around Classon Ave) “Clinton’s Bed”. It works on so many levels and is so inherently dumb that I love it “I live in Clinton’s Bed”-“whose bed?”. Think of it as real estate satire.
 
Genius.
 
Brownstoner
June 2, 2005
Garden Tour of Ft. Greene, Clinton Hill and ProHo
   
Brownstoner
September 29, 2005
Beautiful Conversion Candidate on ProHo Border
On our way back from Prospect Park on Saturday, we took Grand Avenue back to Clinton Hill. While Grand south of Atlantic isn’t the avenue’s prettiest stretch, this particular building caught our eye. We couldn’t help but think what beautiful lofts could be carved out of this baby. Technically this would be considered Crown Heights and not Prospect Heights, right?
 
Set Speed aka onehansonplace.com
October 11, 2006
Two Corcoran-marketed townhouses on Dean in ProHo
Filed under: Uncategorized — ltjbukem1 @ 8:09 am
In the wake of this morning’s NYT article on corcoran’s bias, be careful that they don’t steer minority folks away from these two sub-$800K townhouses on Dean between Grand and Washington.
 
Both are less than a block from the yet-to-be-closed Washington Condos.
 
Ironically, the corcoran agents were trying to steer white folks towards ‘whiter’ areas, like Prospect Heights. Whodathunkit?
 
New York (NY) Press (March 1, 2007)
Today, Fauxbo-land reaches as far as SoBro (South Bronx), SoHa (South Harlem), ProHo (Prospect Heights), SoHell and Clinton (Hell’s Kitchen)—“up and coming” neighborhoods that have been oh-so-cleverly renamed in a marketing ploy meant to shirk their bad reputations and attract Fauxbos by aligning themselves with already hip areas.