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1. S.Y.D.
Acronym. S.Y.D. (Smell Yo Dick) originating from the 2007 Riskay song of the same name. The song is a suspicious lover's inquest into her lover's infidelities at which point she demands to smell his genitalia for aromas of amorous activity.
that nigga came home at five in the morn?

S.Y.D., girlfriend... S.Y.D!
2. y d m h i
y d m h i means you do my head in.
person 1: y d m h i
3. Y.D.A.F.O.C
Y.D.A.F.O.C Which stands for Young Dumb And Full Of Cum
Bobby-yo i think the condom broke when I banged Carly.
Alex & Jon- your Y.D.A.F.O.C(Young Dumb And Full Of Cum)
4. S.T.F.U.Y.D.W.
meaning: shut the fuck up you dirty whore
on instant messenger
bob: sally you have the nicest ass in the world
sally: S.T.F.U.Y.D.W.
5. S.Y.'d it
When you have made a mess of your work, without being aware of it. This is generally through no fault of your own, due to the fact that you are in over your head and are oblivious to how your job should actually be done.
You assign tasks to be done on a project before the tasks could possibly be accomplished causing cost over-runs. Your boss realizes that you have just S.Y.'d it.
6. F S Y D
Short for "For Sure Ya Dig".
Tryin to smoke?
F S Y D
7. I.H.Y.D.B
I hope you die bitch.
Jimmy carved I.H.Y.D.B into Crissie's car.
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