Simply put, one who sports a blowout haircut(see Pauly D) while receiving a blowjob and taking a shit.
"Oh man, unbelievable...I just walked in on a fuckin' blumpkin boy! It's amazing he could even manage the multitasking with that blowout"
by switchbladejack October 29, 2011
Get the blumpkin boymug. by Sk3lt0r141 October 1, 2021
Get the City boy blumpkinmug.