Picking up a weapon in an enemies square

[Darklone]

It has come up several times in my games and I didn't allow it. Considering the ideas my players came up with to exploit the possibility afterwards, I'm happy I didn't.

 

[Liquidsabre]

It has come up several times in my games and I didn't allow it. Considering the ideas my players came up with to exploit the possibility afterwards, I'm happy I didn't.

You got me curious Darklon, what is it your players thought of to exploit? Not like picking up a weapon in an opponent's square is easy or anything.