A homosexual act, one that creates a sense of suspicion among a group.
We always wondered which way Jerome's door swung, but I think we came toa conclusion the night he pulled a homobski.
A gay or homosexual act, performed usually by individuals who are "under suspicion."
Dude #1 - "So you really think Paul might be gay?"
Dude #2 - "Are you kiddin? That kid has been pulling homobski's all night!"