When a man tucks his cock and balls back into a mangina without using his hands.
Shit, did you see Andy bend forward and pull off an automangina!? Hands free!
French for "you fat fucking cunt", but a bit softer.
When lots of gros cons meet up for a night out you have a gros con zone (GCZ).
Places with high levels of gros cons are Paris (whole city), London (the area between Holborn and Old St). Typical gros con professions: lawyer, paralegal.
Shut up, gros con! Shut the fuck up!