primarily used as an adjective, or an interjection.
Kake: "Dude, you make some
crazy grilled cheeses."
Billy
Ice: "Yeah man, my grilled cheese is so OH YES
SIR!!"
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"I have no idea what I did last night. OH YES
SIR!"
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"Man, that girl looks so OH YES SIR right now."
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Alternatively, OH MY GOD YES SIR can be used for a more dramatic effect.