1 definition by Dr. Brown finger

The club one joins after having inserted his thumb into his wife or girlfriend's anus while have doggy style intercourse.
Dude, I joined the thumb club with this chick last night when I was pounding her doggy style.

I joined the thumb club with this girls last night. Check out my chocolate wedding ring. lt came with a corn kernel diamond.
by Dr. Brown finger November 10, 2013
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