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Mylyb - acronym for the phrase "miss you, love you, bye." It is a more simplistic way of saying goodbye to someone in a text, rather than typing out the full message.
Will: I'll talk to you later, babe.

Val: Ok, mylyb!

Say you are texting someone, while stopped at a stoplight, and the light turns green while you are saying goodbye to them, simply type "mylyb" and they can interpret that as you being in a hurry, but still caring enough to not leave them in the middle of a conversation.
by Spark5 October 07, 2011
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