5 = May
b = be
5b = maybe
Girl: want to meet up for coffee this week?
Guy: 5b
by Zed dawg April 08, 2017
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An alphanumeric string denoting a hack and insecurites in the HD-DVD coding.

Also; the key to the digital revolution.
Viva la 09 F9 11 02 9D 74 E3 5B D8 41 56 C5 63 56 88 C0!
by withoutamartyr May 01, 2007
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geek for "F U, MPAA and AACS"
I'd tell you to look it up on Wikipedia but you can't, so google it instead.
I'm gonna go all 09 F9 11 02 9D 74 E3 5B D8 41 56 C5 63 56 88 C0 on your ass.
by hibby May 02, 2007
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."An abbreviation for "maybe
Composed of the number of the month may, and the name of the letter B
5B yes or 5B not
by Sahbak May 11, 2020
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