Ashley gave me such a huge one that a bruise formed.
Before that (because it's not a romantic or even sexual thing), my parents found out I was having sex when I came back with no less than 7 on my neck.
Stupid girls.
I think your parents need to know more about the birds and the bees... I never understand how some parent can change "hickey" to "sex" without blinking. I probably had seven hickies on me at some point while I was 13, but I definitely wasn't having sex!