<verb> The attempt of sexual intercourse, when the male accidentally inserts his penis, into the improper opening in the vulva, ex. urethra or anus.

past tense- ritty rotted
"So I was fucking my girlfriend last night, then i accidentally ritty rotted her, I was so embarrassed."

John was so ecstatic to finally lose his virginity, unfortunately to the school slut Kimberly. John slept over Kimberly's house for the night, started off with foreplay, and continued until John got so lost and confused that he accidentaly ritty rotted her, and lost all of his manhood.
by Ding L. Berry January 13, 2010
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