Alleyheads 

Alleyheads are stoners, rockers or casual hangers-on, both male and female, who hang out in local alleys, using the alleys as social gathering places, especially before heading out for concerts, gigs, parties, the beach or a night of cruising. These groups are principally found in cities, towns or neighborhoods with a prevalence of alleys.
Another reason these groups hang out there is because they offer stealthy protection from the police, who seldom venture into alleys during patrols, and therefore, giving an alleyhead a peaceful respite when smoking marijuana or drinking beer or other alcoholic beverages.

Hey dudes, the Alleyheads are throwing a beach party at Zuma and everybody's invited!

Alleyheads by garagehero1 May 1, 2021

Alleyhead 

Getting a blowjob in a dark alleyway, preferably a British one behind a pub.

Tom: What did you do for fun in England?
Paul: Oh, I had some stout from a pub and then proceeded to get an alleyhead from a English chick.
Tom: Sounds fun!

Alleyhead by Hideyo Kitakawa June 8, 2018