A sexual position similar to 69. In 63, the girl is on top, and instead of giving the guy head while he eats her out, she lets him titty fuck her. The outline of her boobs is like the number 3.
by nameisusedbysomeoneelse_lame July 14, 2010
A slang way of saying down syndrome, usually used to insult someone. Derived from the fact that down syndrome is caused by 3, 21 chromosomes.
by katana90 March 30, 2011
by Amy9999 July 09, 2006
average length (in inches) of an Irish penis. Not to be confused with the average 5.3" of a central European dick
by Jake January 10, 2004
by itzbrickbitch June 03, 2011