GOP whipping boy Mitt Romney may not have tasted victory last fall.

But that’s no reason to deprive himself of something sweet today:

“Happy 66th Dad. Can’t beat a fluffernutter cupcake,” eldest son Tagg writes in his Instragram shoutout.

We’re just happy to see Romney is allowing himself a little something special — graduating from his usual no-frills caffeine-free Diet Coke to an energy-charged pour.

Party on, guv’nor!