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2 definitions by Sir Psycho Sexy

 
1.
The process of excreating (taking a shit) and ejaculating at the same time. Hence, havin' a roni.
"Do you know what it's like, havin' a roni?"

First used on the 1989 song "Havin' A Roni" on Vanilla Ice's debut album "Hooked". Also on "To The Extreme"
by Sir Psycho Sexy May 16, 2006
 
2.
A slang term for sexual intercourse, coined by some Japanese kids during a soccer practice. Must *always* be accompanied by a pelvic thrust or two.
Waist-shake? *pelvic thrusting*
by Sir Psycho Sexy January 12, 2006