Jumping on stages
Jumping on your partner's "dingaling" as you're having intercourse with them on bed (the bed being the stage ofc)
Oh so you where jumping on stages last night with Jeffrey?*wink wink*
jump the stage
An event where an uninvited person barges their way into a situation for the sole purpose of gaining attention or notoriety, and ends up looking like a fool.
"I can't believe that Kanye West would Jump the Stage during Taylor Swift's big moment."