He PM’d me, said it was just an accident.
2Big4U this is a problem a lot of us face, the problem of stealth. A dry warm feeling you’ll get from a rice sock is perfectly fine for a warmup, though as we know damp heat is, ultimately, better. IR heat is the best, but that’s the least secretive, unless you can get yourself a desk lamp that you can fit both an IR bulb and a normal bulb into, in which case you’d be able to alternate them to avoid suspicion.
Or you could buy a proper heat sack, which usually have special rice or beans or something in them, and say to (parents I assume?) that you’ve got some neck pain or that it just helps you relax or feels nice on your neck. Proper heat sacks provide a more moise heat (Ive found) and you can wrap your penis completely in them, so they’re better overall.