Gods are good, lice do not jump from head to head! To catch lice, you need to chest off with one chest, or sleep on the same pillow, or put on someone else's hat. I don't know, now, probably, it's not so accepted, but in my Soviet childhood, my mother strictly forbade me to give anyone my haircut or take someone else's (family doesn't count, it's all in common).

No no no no no no no! My mother brought such a lice from public transportation and gave it to me. They got out quite easily, but the hysteria of the entire long-haired family was noble. I don't know if she threw her head off on the bus seat or something like that was sitting next to me, but in the same bed with my mother I definitely don't sleep and we're different, not even accidentally confused.