A really huge dickhead who is incredibly full of himself and does not see that he is a complete ass hole.
My girlfriend is such a Big D to my friends.
by W.e. Man April 22, 2011
a shady person who likes to pull lame pranks. a Big D normally hustles you in bowling and often threatens to kick you out of his car on the way back from Tahoe. a Big D lives in head house or commonly known as homo house.
Big D is a shady hustler.
by jockpenthouse January 16, 2011
A fat fucking loser.
by Anonymous September 24, 2003
variation of Big Deal homie, "Big Deal"
'Yo man, i scored ten TD's on the weekend'

'So what man? Big D!'
by J & A Banger June 06, 2007
BIG D : Is a term used to describe a very muscular male , the D is said to stand for DAN an english slang term for '' A BOSS OR A PLAYER '' , and so when you combine the two words BIG & DAN they result in a muscular young man , this term is often used in London UK , but is a popular word spreading on the streets of england.
Example : yo BIG D whats happening my man you cool bro

yes BIG D you alright bro
by bigdogwestwood June 21, 2011
a word used by friends to greet one another
"What up Big D?" or "BIG DDDDD!!!!!!!"
by Snow Blower March 09, 2003
1. A mahoosive cock
2. One with a chode
3. Top floor reject
Oi, Big D, pass the growth hormones.
by Mad Not Mad May 01, 2003

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