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 3, 2013
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Delicious chocolate with peanuts inside.

The most appropriate use of a blue peanut M&M is to throw it at John Wilson during parties. Never eat a blue peanut M&M, for they contain an unknown substance that may kill you.
"Don't eat the blue peanut M&Ms!"

"I will never eat another blue peanut M&M..."

"The only appropriate usage of blue peanut M&Ms is throwing them at John Wilson."
by MiriamBay'sSurprisePartyROCKED February 2, 2010
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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 28, 2011
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