Clam flex

The act of an aggressive woman (most likely a lesbian, or Karen), in which this person will proudly demonstrate their innate ability to turn up from 0 to 11, and verbally, sometimes physically to assert themselves over those they perceive as someone who is not worthy of their respect.

"dude, did you see how that butch looking chick just got in Chad's face?"

"Yeah bro, that was the ultimate clam flex"