To hump someone. Used on the internet to say that your are humping.
1.Sammysam123: I was walking around one nigh and heard these moaning noises, and I looked in and saw Brittany and Tiffany humping all night long! They were naked and slapping each others' asses! *hump**hump*
Bryanrox:wth r u doin??
Lisa89:Humpn u, silly!~!! im horny an cant just hump pillos all nite! *hump**hump*