Tourettes strikes again

The sweet,unassuming dopey-eyed, freckled, mop-headed bagger at the grocery store was the victim this time. Kaleb blurts out, "you need a haircut!", as the hardworking young man fills our bags. My cheeks filled with color and shame as I had to add another comment to the ever-growing list of horrifying remarks that spray out of my son's mouth. The kind fellow was merciful and shrugged it off like a champ.
The question remains-Must I list every single thing, IN THE UNIVERSE, that one is not supposed to say outloud? When is this child gonna catch on?