Yes, I lived in a hippie travelling community for a while when I was in Australia, most of the men had long hair and no sense of how to groom it, so it was nearly impossible to control. Especially for those with dreadlocks. Some of the guys used to be like "oh, I just washed it, is that not enough?". I learned a whole load about headlice, because I'm a total nerd like that, and went around traumatising everyone and lending them conditioner and combs. I was really on it about getting rid of them like a lot of the other girls, but I have very thick, long, fine hair, at the time down to my waist, as well as having a couple of hair wraps, it was nearly impossible to get them all and I either kept catching them off other people, or I could never get rid of the last egg and would have to go through the process again a few weeks later. What's worse is I already have a sensitive scalp so I never really knew what was what. Eventually I found a treatment that worked (about the last one I tried), that killed the bastards and I never had any problems with them again.
I think I only got them once as a child when I was very young, but a nasty girl once went around telling everyone I had lice, until my mother found out and apparently drew her to a corner and threatened her. I remember catching them very briefly as a teenager and getting rid of them instantly. I never found out who I got them from, but a girl in my year didn't deal with them and got them seriously bad. I have always wondered if I gave them to her as I had a lot of friends outside of that school, it is a thought that makes me feel pretty guilty. Then again, there is an element that if you get them, you are responsible for sorting them out in a timely manner.
While I got incorrectly bullied about it and it used to be a huge deal for children, I am pretty clinical about it and don't feel embarrassed. There's no shame in it, I have lovely clean hair and lots of people want to hug me, of course if the little critters get the chance they'll want to have a party on my scalp. But I am a responsible adult who will do the right thing and sort it out when I get the chance, as well as telling everyone I might have hugged about the issue.