a laugh word that may be a result of ironic misfortune or just general misfortune. The laugh is generally used when someone does something wrong and it may not be laugh out loud funny, but as a harsh response the laugh can be used. Basically used for the amusement of others around a persons misfortune.
Fred: that bike trick is easy, watch.
Bill: Go on then.
(Fred attempts a bike trick and fails, falling off his bike)
Bill: Bahdadada.

Roger: I can't find my class anywhere.
Sam: Really?
Roger: Yeh, i've looked all round the school but i can't find them.
Peter: Bahdadada.

Nicholas: So 2x2=4 and 3x3 is 12... i mean 9.
Liam: BAHDADADA!
by Roger Burton May 29, 2008
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