To get on top of someone and to move your body up and down
"will you hump me if I sit down John"
"Sure" John says
John gets on top of Sahara and yeets his penis into Sarahs vagina and starts going up and down faster and harder Sarah starts to moan louder and louder"uhhhhhhhhhhh"
I asked Jonesy to pay back the £50 I loaned him when we were in the pub and he got the right hump. Typically used in Guy Ritchie films and pronounced "roight hamp" by mockneys