The straight guy that hangs out within your girlfriend's social circle. Even though you may be able to stand some of her friends, this non-gay male friend throws an odd wrench in things. The one that never has any chance with any of the girls, and is always the one to offer questionable "male" advice when one of the girls approaches a guy or has relationship issues. The boyfriends of these girls make attempts to socialize with him, but quickly realize his douchey role in the group. He typically will be seen buying pitchers of beer for the girls, bringing his own darts and pool cue to the bar, organizing wine and guitar hero nights, boasting about his volunteer firefighter status, and getting set up with the grotesquer examples of the female species.
Mark: Hey babe, is Allen, the crumudgen coming out tonight with us?
Heather: Don't call him that! And no, he's getting all the things ready for tommorrow's Sangria ladies night at roxannes
Mark: Cool, I'll be out flying fighter jets