What is 456?
1.
automatic win in ths dice game, ceelo
damn! i just lost 10 dollars because that bitch won with a 456
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2.
From the phonetic sound produced when saying "for f*cks sake", or ffs
"456 stop spawn killing"
3.
How to agree with the expression
"The latest
In Flames album sucks dick through a straw."
"123" ("I agree.")
"456" ("Me too.")
See