Upon completing a rimjob, and finding your partner has
ill-prepared their anus for such coitus, vengefully
kissing them to show your displeasure in the
fecal matter that has accumulated on your lips.
"He kept asking for a rimjob and assured me that he kept his ass
clean as a whistle. Sure enough, he was a liar like all
the rest, and I had to give him a Hershey's Kiss
to show him how it felt!"