Check out my other comment but I’m pretty sure it’s because of the confidence clip. There’s actually an extra step where you sweep your thumb across the spoon to allow the pin to be removed from the grenade. After that yeah you probably could pull it with your teeth… but if you fucked up and fumbled it you’d win the Darwin award.

Really the myth should be about cooking a grenade. Absolutely no way in fucking hell you’d ever trust that fuse to “actually” be 4 seconds. What if it’s short and actually 3? And you wait to 2 to throw? Nooo way lmao