When a little kid is flirting with someone much older than them of the opposite sex by trying to get their attention. Sometimes acting up and going out of their way for the attention.
A 9 year old boy acting up in front of a 17 year old girl for attention.
9 year old: You don't know my name!
17 year old: ...
9 year old: Bet you can't guess it!
17 year old: ... I wish this boy would stop kid flirting with me.