a person on meth who is doing stupid, senseless things and acting strangely.
last time i visited john, the sprungmonkey was taking apart his broken vcr again.
by kristekitty October 14, 2009
An erect man sausage thats so erect, so fast, its as if its a monkey jumping at you from within your pants
Blaze was so happy to walk in on arron taking a dump in the shower that he was totally sprung monkey all over the place!
by RYTOE November 06, 2003