This technique is also used by
preeteens and other people who haven't quite figured out how to
flirt. From personal experience, some examples might be:
teasing,
ice down the shirt,
pulling pigtails,
stealing schoolbooks,
making faces,
stealing jello at lunch, etc...
From
Bill Wattersons excellent
comic strip,
Calvin and Hobbes:
Susie: HEY, CALVIN! Are we near a slaughterhouse, or did you forget your deodorant?!
Calvin: DROP DEAD, SUSIE! You're so ugly, I hear your mom puts a bag over your head before she kisses you goodnight!!
Calvin: It's shameless the way we flirt.