It's when a girl pinches the tip of your dick so all the jizz all shoots at her face.
1π 1π
Oral stimulation of the grundle.
The lovers gave eachother grundle schnacks because they were bored of the missionary position.
8π 4π
Oral stimulation of the grundle given by a dog, achieved by smearing food, usually peanut butter, on the grundle.
grundle schnacks
Shaggy exploited his pet dog into giving him scooby schnacks, by starving the dog, and then providing him with only one source of food.
7π 10π