originates from being under the influence of ketamine, but is accepted in generalized terms as being fucked up on pretty much anything, not just k.
dude, i am extremely k-rocked to the max.
When you inject Heroin, and it turns your blood a brown, muddy colour.
"Ahhhh man.... I just had mudvayne"
Abbreviation used in the porn industry for double penetration shot (i.e., simultaneous vaginal and anal sex on film).
If it's what you're looking for, you can find a section of DPS pornos at the adult video store.
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