We know that there is very little that GRRM includes without real reason, even as far back as on the journey to the Eyrie Catelyn thinks something along the lines of "my heart must be made of stone." and lo and behold, after some creative surgery, Lady Stoneheart.
So is Tormunds constant, and hilarious talk of his cock subtle foreshadowing that he's going to father the next Shadowbaby? As we know, the most potent penis in Westeros at the moment belongs to Stannis Baratheon, as it is responsible for the deaths of two of the series biggest wise-crackers, with all this talk of Tormunds member and its physical traits, is there a chance that Mel could goad the giants bane into trying to upstage Stannis' own sword? Or is it bigger than that? Is Tormunds member in fact, Lightbringer? Has it been under our very noses this whole time?
I'll give you a chance to take it all in.