It's Rob Gronkowski's birthday! Happy Birthday Rob Gronkowski! Hey...let's see how Gronk is celebrating his big day!
Umm. Errr. Ehhh. Ok.
This tweet isn't done yet, though; check out the pants that Gronk's mother is sporting!
gronk's mom is wearing zubaz i'm so happy— Lana Berry (@Lana) May 18, 2014