Similar to the risky wank
. It involves sitting in your room with a boner, then yelling to your mum that you need to see her quickly. The trick is to start and finish jerking off before she makes it to your room. Only attempted by fucking idiots or virgins who can cum that fast.
john: "MUUUUUUUMMMM COME HEREEEE!!!"
mum: "Coming" Step, step, step
john: "SHIT, SHIT ,SHIT, FUCK ME YEAHHHH"
mum: step, step, open door "WTF!!!"
john: "CRAP....DIDN'T MAKE IT"
John fails the death wank. Silly prick