...and perhaps to wet something else.
Even if all the Paintball teams don't do as far as those in the story, there are still plenty who enjoy ritually humiliating the losers.
Make them pose for the cameras!
Was it a works outing? Is there a staff notice board? What will the losers find waiting for them at work on Monday morning?
Better the potential shame of a few embarrassing photos in the future than the certain shame of welching on a bet.
This poor bastard was too cute to let go without a few photographs to share at work.
And this guy didn't fare much better.
You can go for a simple pose or you can really go to town by insisting on a quick wank for the camera.
There are always a few who really want to go to town on the losers, though. We like customers like this!