(a) meet with friends so you don't just think about getting laid the whole time
(b) a party so you don't try too hard to impress girls
(c) a date so that if you end up having sex with HER, you don't bust immediately
guy 2: Nahh I gotta go to Chelsea's.
guy 3: Bro you're bailing on us for a date with that hog?
guy 2: Fuck no. It's totally a drive by date. I'll see you at Tony's in 40 minutes.
guy 1: Sick, you know Tiffany's gonna be there.
guy 3: That chick from biology he has a hard on for?
guy 1: Oh yeah. I see what you're doing bro!