The refreshing climax to a sexual encounter, tadpole milkshake is a euphamism for semen ejaculated into a partner's mouth. One variant is the 'tadpole thickshake', which is the same as the milkshake but brewed in the NUTSACK for at least 5 days to ensure a thick consistency.
My friend and I were at a drive-through restaurant, and I dared him to ask for a Tadpole Milkshake; the girl said "Hold on, sir, I'll just get Brutus to whip one up for you...".
by Googles December 2, 2004