Okay kiddo, a foam tomahawk is a toy that looks like a big, squishy axe. It's made out of a special kind of material that's really soft and light called foam. That means if you accidentally hit someone with it, it won't hurt them because it's not heavy or hard like a real axe.
You can play with a foam tomahawk by pretending to chop down trees or fight pretend enemies. Some people even use them in games like capture the flag or dodgeball.
It's important to always use a foam tomahawk safely and not hit people or things that you're not supposed to. And remember, even though it's a toy, it's always important to be careful and respectful of others when you're playing.