One of many euphemisms for "masturbation" (e.g. slappin' the salami, jack off, beat off, buffing the bishop, glean the obscene bean, choking the chicken, spanking the monkey, waxing the wonker, greasing the guppy, shooting putty at the moon, and Rosie Palmer and her Five Sisters doing the Four Knuckle Shuffle.

When one inserts both testicles into a woman's vagina whilst vigorously jackin' off on her abdomen, hence the name.

pretty self explanatory. An act of jerkin it, or tuggin the bugger. Otherwise known as masturbation.

slang term for male masturbation