Top Definition
A sex act where the man dips his testicles in liquefied chocolate and the woman sucks the chocolate off while giving him a handjob.
Zoe was going to give Zane a Peanut M&M but the chocolate fountain was broken.

Man that girl Zoe gives a mean Peanut M&M.
by xqbed November 02, 2013
The art of covering a guy's balls in some form of melted chocolate, Nutella, for example.
Last night, my friend's gave me a Peanut M&M. It fucking sucked, bro.
by xbr0seidon June 27, 2011

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