One poor bloke has documented exactly what happens when a bald head cops a raging sunburn so consider this your annual slip, slop, slap warning.
Cade Huckabay had given his noggin a fresh shave right before he stepped out into the Texan heat and, before he knew it, was burned to a crisp.
And then his head ballooned right on up, swelling so much that he could literally poke dents in it.
"One time I shaved my head, got severely sunburned, and swelled up just a little bit," Cade captioned the photos, which have since - understandably - gone viral.
Just in case you can't see that last one clearly, here's a close-up:
"At one point I could put a dent in my forehead and it would stay there for like half an hour," Cade added. "Word to the wise, wear sunscreen."
We weren't the only ones horrified by the poor bloke's enormous head.
Eventually - two days later - Cade's forehead returned to its regular size, a development that was announced with much fanfare.