Laughing can get me in trouble one of these days...

[Babar]

Just put a joker card underneath their windshield wiper and walk away

I'm going to look for a pack of joker cards (or separate the jokers from all the packs I have), and do that for several things from now on.

[Cuiki]

What a cool problem you got here, dude!
Try to really laugh your ass off and enjoy it while you can, it'll wear off sooner or later.
In case of unpleasant encounters use the tricks already listed here. You know, don't worry, be happy!

[Stupot]

I'm going to look for a pack of joker cards (or separate the jokers from all the packs I have), and do that for several things from now on.

Can you get packs of Jokers?  Probably from magic/joke shops... I'm blates gonna mish it to find some
[/end teenspeak]

[Timo.]

Suppress it. And even if you can't, then just suppress it.

In any case, I would recommend that you should go for some conditioning, considering the speed you would need to run from the *ahem* facks  who give you dirty looks.

[Haddas]

I like to drive around town blasting awesome jazz music. That or something ridiculously embarrassingly terrible. Some people point and laugh but that's the point. Others (50+) usually give me thumbs up if I blast tunes from before they were born.