When someone does or says something particularly stupid, one pretends to check for a fever as a gesture of false sympathy (or "cupping" their forehead). One then lifts their hand off their forehead and comes back down to smack them in the forehead. Cup 'n Smack is a form of tough love.
The few week period after breaking up with your girlfriend dedicated to bro-time. Usually involves getting absolutely inebriated with your guy friends and pouring out all of your emotions about your ex-girlfriend/the break up. Probable tears are involved
Bro #1: Dude Janine just broke up with me, you wanna hang out tonight?
Bro #2: Yeah let's get fucked up. You can go on a gaycation with us Bro #1: That sounds great man- I need to talk about my feelings, plus I miss you guys.
Bro #2: Fag.