Missin; to be without someone who is fun to be with and great in bed, often refers to men named Andrew. Long bouts of "missin" can be associated with lonliness, boredom, excessive drinking and self pleasuring.
e.g. Yo I is missin ya Nigga
by J9 January 8, 2005
to do one, or to flex. a word used to let someone know you are going
im missin, i will catch you in a bit
by d boy December 10, 2005
making fun of someone for missing shots on the bball court
Rex shoots ball and misses completely.

Jim: dawg you suck at ballin
Rex: Yo man dont be dissin' on the missin'
by T-dizzay December 18, 2009
Kinda like "what did I miss?", or "what am I missing?"
Eric: Yo, what's missin'?

Jackson: Not much man, just talking about that concert next Friday.

Eric: Oh yeah
by thesuburbanguy December 29, 2020
To miss a lot; have been missing you like crazy, or i have been missing you a lot.
to a friend you haven't seen in a long tome: I haven't seen you in forever, i've been missin' you crazy!

or

it's been about a year now, ain't seen or heard from you, been missin' you crazy
by Ryn Cat August 11, 2009