Odds are, no he didn't wet himself. Triple H always begins his entrance with a water bottle, so there's the possibility that he spilled some of that one the way out. Secondly, and more importantly, he drinks a large portion of that water (not in a tidy way) before spitting it all out. When spitting, most of the water rains down on him, making for a cool moment, but it must wet his clothes, right?Or did he actually wet himself accidentally?
Alright, we know it's almost 99.9% sure that he didn't wet himself, but that doesn't mean it isn't a hilarious photo because of the well placed wet spot.
And be honest with yourself, if Sting had a bat to your neck, would you be able to keep your pants dry?