Noun: A reference to how your penis would look if your significant other threw up on it making it look all green and chunky
Clarissa: *vomits on dick*
Trey: What the fuck! You just gave me Guac Cock you bitch!
When you are fucking a girl with ghonneria and pull out your cock and it's covered with a substence which resembles guacamole.
Man1: Hey how'd your date go last night?
Man2: not so good... the night turned out pretty shitty.
Man1: Why didn't you score...
Man2: Yeah but she had the clap and when I pulled it out I got a dick full of cock guac.
1.When you are getting some sweet head (Similar to sloppy toppy)
2. A situation in which you are being screwed over but it is either funny or the results are still good.
1. " Bro that soro-ri-whore from the party last night was good at guacing cock"
2. Person 1: Bro jess and chelsea are both trying to get with you man.
Person 2: You gotta be guacing my cock bro they are both too fine to decide.