look up any word, like the eiffel tower:
 
1.
A blow job that is so good, one of the feet stretch out and the toes curl in imitation of a monkey's foot. Usually accompanied by an outstretched arm with clenched fingers.
She sucked me off so good, I had monkey foot going on.
by Lucreza Borgia January 31, 2007
 
2.
One who packs a bowl while holding the bowl with his/her feet. n.
Mariel is such a monkeyfoot; she always holds the bowl with her feet.
by Dreezy_bluntz November 14, 2012