Gay Panic

This is when a Presumably Straight Male is in situations when they get (sometimes subtly) intimate with a Gay Male, realizes what is happening, the adrenaline kicks in, and the Presumably Straight Male acts Awkward and/or Gay.

Person A: Dude, I totally had a Gay Panic with my summer camp roommate last night.

Person B: No shit Sherlock, as if I didn't notice you two.