Dorkwad Willy Gripper

When you're doing doggystyle and spit on both of your index fingers and then proceed to stick them in your partners ears and twist; delivering a potent wet willy and shocking them into tightening their vagina/anus at the last minute before you ejaculate. Similar in function to a donkey punch although less violent.

Best used right before you finish and on considerably dorky individuals.
An alternative method is to use your fingers in a double fish hook technique to use your partners own spit.