It’s short for: Suck my dick

Mostly used in chat. Can be used when you want somebody to shut up. It does not necessarily have do be meant in a bad way.
A: Hahahaha you lost! I knew that you will 😝
B: Oh come on smd!
by Broidkhahaha February 06, 2021
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An acronym meaning, 'Suck my D*ck.' Used to express disinterest and annoyance. Popularly used in social media and texting.
Person A: Hey, remember that time I hooked you up with that cute blonde chick? You owe me.
Person B: Whatever, SMD.
by cherryui September 28, 2020
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bisexual slut who thinks she is better than everyone and it pisses me off bc she’s obsessed with this one chic like siggy can go fuck off and die
person 1: omg what is that shit on the mountains?!
person 2: probably signa from smd
by smd666 October 18, 2018
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