The sexual act of acting like you are going down on a female partner and spreading open her vaginal lips and applying super glue between them and then holding them shut thus giving you a “welded” effect.
Bro 1: I heard you just graduated welding school congratulations bro!
Bro 2: what are you talking about I never went to welding school?
Bro 1: Are you sure my sister said you’re the best Missouri welder around?
Bro 2: OH YEAH! Definitely not what you’re thinking!