Black slang for your day was just ruined. Can also be used as a joke for someone that usually says stupid but funny.
A: ...and he then he caused all this shit up.
B: He really blows mine.

A: I heard Ms. C gave you detention.
B: I know, she just blew mine.

A: Yo this homework is blowing mine.

A: -some joke-
B: LMAO
C: -to person B- LOL yoo this bitch is blowing mine!
by kiwishiiiit February 22, 2010
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New York slang to describe that inexplicable feeling that you feel when something is doing the opposite of what you would like it to do. "Pissing me off" is too aggressive something that is blowing yours and and saying "this situation is annoying me" doesn't sound as cool.
This 9am class is blowing mine. I hate waking up early.

The fact that I have to take the bus now is blowing mine, I need to get a new car.

All of these young people at this party are blowing mine. Let's go find a place that has people our own age.
by omgsocks January 17, 2013
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When someone is blowing yours that person is pissing you off to the extreme!
Yo this girl is blowing mines yo to the max! Yo no funny shit my nigga your blowing mines yo!
by fresh boy! October 12, 2019
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