Secondbase- calls a stranger a vulgar name
Steve- Am I speaking to you?
Secondbase- It doesn't matter if your speaking to me
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.
Bob: I totally got Frank with a secondbase yesterday, he is such a slut!! (high five)