There must be a small but dedicated porn community for this.

Lab Bitch: Hey, [Chem Slut 1]...I think, uh, you have a little something on your neck.
Chem Slut 1: Ummm, thanks, S. Funnily enough, I was actually aware of that.
Chem Slut 2 (calling from the melting point machine to Chem Slut 1):
PSST! (Pulls lab coat and underlying sweater aside to reveal even larger hickey)

(Later that night, in dining hall)
Chem Slut 1: The next time Lab Bitch calls me out, I'm gonna give HER a hickey. WITH A BUCHNER FUNNEL!


--SCL
(Editor's note: I make no judgements, I just post what is sent to me. These girls sound fun though. Rawr.)