having sexual intercourese with your partner while wearing Sherlock Holmes hats, smoking pipes and completing a crossword in under 10 minutes.
by sergio97 January 01, 2011
by Scylla June 28, 2006
Having sex while messing around with unlucky things. Caution is advised. May result in unpleasant results.
Man, I went to 13th base in the house of mirrors under a ladder while a black cat opened an umbrella indoors and crossed between me and her (it joined in for a bit of course) last Friday the 13th and MAN was it great!
by TriedTooManyBases October 22, 2011
(male) when you have intercourse with a female and you end up getting warts, aids, and every other STd you can think of.
by Will Deshazo June 04, 2006
by Mr. Supotco November 13, 2015