... is driving along the road with the young fella beside him in the car, and up ahead he spots a Gárda checkpoint.
As he approaches, he starts mercilessly slapping the head off the young fella. The Guard sees this and, when he pulls up, remonstrates with him:
"This post will be deleted if not edited immediately, stop it, will you, what are you doing to that poor young fella?"
(the kid is by now bawling his eyes out...)
"Ah, Guard, if he'd done to you what he just did to me, you'd be hitting him a dig yourself, like..."
"So what did he do to you?"
"He's after eating my feckin' tax disc!"