whatever makes you happy/feel better/or something of the like; usually said in an, "alrighty then, whatever you say..." tone
also a synonym for whatever floats your boat originally coined by Gibby on iCarly
My unrealistic and innocent friend: OMG, me and Kevin got back to gether again!
Me: (me thinking: oh ya, cheater-Kevin, ugh) Whatever bakes your potato...
My still unrealistic and innocent friend: Teeheeheehee!!