When you grab another persons chest( in particular either their breasts or where there breasts would be if they are aa male) then shouting "Second base (insert person's name) is a slut". This is uusually followed by high fiving who ever is nearby. It is best performed on an unsuspecting person for maximium hilarity.
by hobo2000 August 4, 2007
Get the secondbasemug. Secondbase- calls a stranger a vulgar name
Steve- Am I speaking to you?
Secondbase- It doesn't matter if your speaking to me
Steve- Am I speaking to you?
Secondbase- It doesn't matter if your speaking to me
by Mindful150 January 11, 2012
Get the secondbasemug.