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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When a large person lays out in the sun or uses a tanning bed to become tan.
My fat sister went to the beach without sunscreen and now she looks like a roasted marshmallow. The girls at the tanning salon were roasting a marshmallow all day in the winter.
by tsintao June 03, 2009
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When you know a girl is allergic to something and you put it in her vagina anyway.
I knew she was allergic to Big Red, but I stuck a piece of it in her and I was roasting a marshmallow.
by Marsmallow roaster November 28, 2006
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The result of receiving a non-arousing handjob that results in loss of erection and burnt penial skin.
My cock hurts bad, it’s a damn roasted marshmallow.
by AlabamaBaby January 02, 2019
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term referring to a person who in an (usually FPS)online multiplayer who sits in one spot, camping, waiting for an unsuspecting victim to walk by.
Red- *runs up past a rock)
Blue- *shoots Red)
Red- OMG! you f*cking camping noob!
Blue- It's a legitimate strategy!
Red- I guess you like roasting marshmallows.
by Onurb June 15, 2007
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Verb. To be extremely high or stoned to the point of upmost insanity. If one was to be roasting marshmallows then he or she will be non-compliant with any task.
"Dude i was totally Roasting Marshmallows last night"

"man let's Roast some Marshmallows
by PimpDocterAce November 23, 2009
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