I bet
Example:
Guy 1: Dude i got a new ipod case!
Guy 2: I bet.
Guy 1: No really look its pretty cool.
Guy 2: I bet.
Guy 1: Well then fuck you!
Guy 1: Dude i got a new ipod case!
Guy 2: I bet.
Guy 1: No really look its pretty cool.
Guy 2: I bet.
Guy 1: Well then fuck you!