Ritual de Famille
When driving, my Uncle would always take his hands off the steering wheel, put them in the air and scream every time we went over a cattle grid.

I almost soiled myself the first time he did it.
( the_ships_cat is it meeee you're looking forrrr, Fri 21 Nov 2008, 9:23, 8 replies)

Ha!
That's lovely. Must try it. It would have scared me too!
(SnowyTheWereRabbit the Leporid from Hell, Fri 21 Nov 2008, 10:50, closed)

He also..
Used to shout 'BIODEGRADE' in a faux plummy accent whenever he threw an apple core or banana peel out of the car window.
( the_ships_cat is it meeee you're looking forrrr, Fri 21 Nov 2008, 11:12, closed)

*clicks furiously*
*Laughs*
*Ponders*
*Takes Notes*
( Agnostic Antichrist Baltimora, Fri 21 Nov 2008, 14:14, closed)

Haha! That's ace!
Similarly, years ago my friend started a couple of traditions which I still do 16 years on, and which have spread exponentially among the people I have introduced them to...

When going over speedbumps we bounce up and down vigorously as if each bump is three feet high. This is most amusing if there is a car coming towards us.

And when going over humptyback bridges we throw our arms in the air as if on a rollercoaster. Sometimes we go "aaaah!" too.
( warmfuzzies Isn't here, Sat 22 Nov 2008, 0:45, closed)

'humptyback'
*loves*
( spimf ™ is whoever you want him to be, Sat 22 Nov 2008, 1:03, closed)

i always slow down a little
going over level crossings

freaks the shit out of mrs spimf

oh and sometimes while driving i suddenly cover my eyes and scream...

I CANT SEE!!!!!!
( spimf ™ is whoever you want him to be, Sat 22 Nov 2008, 1:02, closed)

Say something like
"I know this road so well I can drive it with my eyes closed."

And then close your left eye. Keep it closed until they either get the trick or grab the wheel.
(CavemanJoe lives on improbableisland.com, Sun 23 Nov 2008, 15:48, closed)

GENIUS
*click*
(British Steel was participating in awesomeness on, Wed 26 Nov 2008, 9:51, closed)