Which Jersey Shore Guy's Insanely Huge Bicep Is This? (PHOTOS)

It's JWOWW's fiancé, Roger Mathews. Jenni showed off this smiley, muscle-man photo of her hubby-to-be on Twitter over the weekend.

Did you guess right? Let us know in the reaction buttons below!

Catch the next new episode of Jersey Shore on Thursday, December 13 at 10 p.m. ET/PT on MTV.

Source: @JENNIWOWW

Follow Alissa Kombert on Twitter @AyeKayArt.

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