Rock, Paper, Scissor...Dynamite?

Here's a new twist on the game, my son asked me to play Rock Paper Scissor the other day and while we were playing he gave me a new move that blew me away...literaly. After a couple of losing rounds he was getting a little frustrated so I threw up the Rock and he countered with the ....Dynamite, yes he made this one up a fist with the thumb up and then down to detonate. Just so you know Dynamite beats Rock and Paper so it increases your odds, scissors beats Dynamite because it cuts off the fuse.