Definitions by Mickey D.

base

First base: making out (french kissing)
Second base: feeling up under or over clothes
Third base: hand jobs and fingering
(3.5: oral sex)
Home run: sex, (including anal)

BOB: We got to 3.5 last night

Bill: 3.5, there is no base called 3.5, are you retarded

BOB: you're just mad cause you're never gonna get there

base by Mickey D. May 13, 2008