By popular demand, 'plant' has been implemented.
You are now able to 'plant something on someone', but watch out... perceptive people will see you do it!
Basically it's a reverse steal. Works almost exactly the same.
'slip' has been suggested, which is the same as plant except the reciever always sees you do it. I'll let you know when I'm done with that.
As usual, please report any bugs you find when using it with @bug.