Hahnnotsolo's definitions
Sex position between two males popularized by older men, possibly from the Olympia, Washington area. Generally taking place in parking lots behind bars, man #1 faces retaining wall, building wall, etc. while man #2 enters him anally. Reach around optional.
Dude when I came out of the bar last night there were 4 sets of guys Oly Wallbangin' in the parking lot!
by Hahnnotsolo June 2, 2010
Get the Oly Wallbangmug.