I've seen a less formal and more
homespun method of kite fighting in
Malaysia and
Bali. A section of the kite's control line(s) is rolled in
glue and then in ground
glass. This creates a
cutting edge that is used to
sever the
opponent's line and
down their kite.
The kids usually play with simpler kites than the Thai sport models: sturdy bamboo frames and brightly-colored lacquered paper, usually in a diamond shape with two control lines for maneuverability.
The kids I've seen are far too young to be thinking about sexual symbolism or whatnot; they're just having fun with aerodynamics, tuning their kites, and trying to take home the other kid's. Kinda like hotrodders racing for pink slips.