Top definition
The worst subject ever!!! It sucks so much that all chinese postmen are prunes. it's a waste of anyone's life and should never be taken! May also described as a failwhale of a maths module.
'I HATE D1!!!!!'

Person 1: Ahhhh!!!! There's no more toilet roll!
Person 2: No worries, I've got this Decision Maths paper!

Fool: Who else is taking D2?
Other people: BURN HIM!!!! FETCH US OUR BLOW TORCHES!!!
by KebabChops April 24, 2011
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