Well you can do a Dry hump thing, Its easy to do but it stops when you jump, but you can jetMake one of your keys a Sit MacroCrouch down, hit your Sit button and S at the same time twiceAnd there you go(No one tell me this doesnt work, because it works for me.)PS. i remember /humpIt was fun :p
Its not working for me and i did it 5000 times (really)