When a man cums in a girls mouth
after head, he swishes his "meat" (penis) around in her mouth
while the cum is still unswallowed or not spat out in a rotational circle
as the blades of a blender would
do, causing a meat smoothie
A meat smoothing is literally when you mix the smoothie
(cum) with your meat (penis).
Girl: I was with
last night and he gave me a meat smoothie. I could taste everything, it was fantastic.
Guy: I'm going to put my meat in your mouth and make a smoothie with