Means “small dick maxx.” Homie got a boner and everyone knows the truth
“Bro did you see SDM earlier at lunch”
“SDM got a boner off Riley”
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Abbreviation for "She ditched me".
When a guy gets attention from a woman at a bar, and then she withdraws from him in a hurry.
This chick in a red dress just taught me how to drink scotch, and then she ditched me (SDM)!
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Girl one: So, girl spill the beans about the guy you went home with
Girl two: There is nothing to spill because he suffered from SDM.
Girls one: What is that?
Girls two: Hew as a Short Dick Man!!
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SDM is an acro for "size does matter"
"oh yes... SDM... that's why I dumped Fred."
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spank da monkey!
also known as masturbating, or pleasuring oneself
ho...ho...hold on, let me sdm for a bit
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