I don't know about you, but the insult "go fly a kite" never sounded all that insulting. Kiteflying is delightful! If anyone actually said that to me, I'd be all, "OK." And then I'd go grab my awesome Darth Vader kite and make everyone, ages four to 40, totally jealous of me in the park.
I mean, if you're flying a kite, what does it matter if it's generally marketed toward kids? Darth Vader is totally intimidating. Plus, you can control him! For $30-40, depending on size, Darth or R2 can be your puppet on a string. So would you fly this thing?