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2.
Code for "F-U", as in "fuck you". Numbers are used to obscure the meaning: F is the sixth letter of the alphabet, U is the 20th. Can be used outright or hidden in the text of a message.
Dear Company Name We love dealing with you. Sincerely Yours, Me. 6-20
by Lars Vargas April 13, 2007
 
1.
620
Code for telling someone to Fuck Off- F being the sixth letter of the alphabet, U being the 20th.
Guy: Yo bitch, when's dinner?
Girl: 620!
by Bloodhound32 March 05, 2008
 
3.
620
A number meaning fag.
Hey Anthony you're a 620!
by Salazar October 01, 2006