When you take a dose of Ecstasy (MDMA) accompanied with shrooms. This brings an amazing feeling from the E., and even better hallucinations from the shrooms.
See also:
stroking the sausage
slapping the meat petting the weasel
spanking the monkey flogging the dolphin
tickling the pickle
whacking the mole
playing the skin flute
cream-filling the donut
Excellent my good friend, please invite me to continue this smashing conversation. I enjoy your company in a completely legitamate and non-homosexual fasion.
"Son, nah how the shit be thee?"
"I be shizzling bruv."
"Man, now I got your back dog."
"Y'Shittin' me son?!"