J3(11 yrs old): Mom, I got invited to a party, can I go? It’s a girl’s birthday.
Mom(in her I’mnotreadyforthis voice): a girl? Is this a boy-girl party?
J3: yes.
Dad: you can go if you answer this question correctly: Do girls have cooties?
J3: yes!
Dad: you can go!
I can never think that quickly. Lol
The natural cootie barrier usually lasts until about 6th grade or so but you never can tell.