to give a mexican marshmallow is to piss on a small ball of toilet paper, and then throwing it at someone else.
Steve was being a little bitch the other day so I gave him a good ol' Mexican Marshmallow.
by Ih Liy July 10, 2020
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A slippery marshmallow is when you accidentally drop the entire roll of toilet paper into the toilet while trying to wipe your ass.
Dude i just finished taking the biggest shit, and i pulled a slippery marshmallow and had to use one of your hand-towels.
by DrowningInMagots April 18, 2008
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a sexual act when you fuck a chick (or guy if your gay) in the ass till you cum. then when they shit you shove it in their mouth.
Person 1: Dude Dave gave Emma a Marshmallow Brownie last night!

Person 2: Really?!?!? Did she eat the whole thing?
by Goat balls? September 15, 2011
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Overindulging in too many delicous marshmallows at one time, causing bloating, sickness and stomach pain.
'Oh dude, i had marshmallow malady all night from sitting around that camp fire but it was so much fun.'
by ScottyDog1989 August 06, 2009
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an orgy involving a high number of fat white girls
Len just joined a bbw dating site so he can have a marshmallow party. gross!
by smack_tits January 09, 2011
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Slang for smoking a cigarette or joint.
Roast because of the fire you need to light it and marshmallow because of the white paper of the cigarette or joint.
Let's go roast a marshmallow.

Me and Rocky roasted a couple marshmallows last night.
by YungShalom May 17, 2020
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