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When someone acts stupid and basically sounds just like Brianne after drinking Lemonade with wayyy too much sugar in it.
1) Wow, you're britarded.
2) That was one of the most britarded things you have ever done.
3) She's the slut...boooonnngggg.
4) Damn I really want a bagel.
by Kershaw July 05, 2004
when something is BRILLIANT, but RETARDED.
All the Matrix movies are britarded!
by Brian Owenby June 18, 2008