Sack taps are the icing on the cake that is male bonding. I seriously think that more male friendships have been solidified by friendly smacks in the sacks that by deep, instrospective talk. Yep. Testicles do that to you.
Here are some more of my favorite sack tap clips.
Let's start with the source of the screenshot above. The members of the British youtube supergroup Sidemen are always good for a nutshot or two (remember their fun little game of cornhole?). Here they are with a funny little task in a weird game of trivial pursuit. Skip to the 1 hour mark for two awesome nutshots. My favorite part is the gleeful reaction from everybody in the room. Hilarious!