1)to ejaculate on something or someone
2)to get ones
menstrual period (this expression is used this way in certain parts of the UK)
3)to come online, particularly to sign into an
instant messaging program, to enter a
chatroom, etc.
1)If you pull out, don't come on the
quilt my grandma made me.
2)You seem a bit moody today; are you about to come on?
3)I wish Fox would come on so I can kick her ass at
literati.