much like in the situation where you would say "balls" you can instead replace this word with "balt". Often shouted by the Southern British in an nightclub where the girl they are trying to get with rejects them or an unbelievable fuck up has occurred.
A term with a stupid origin. The word "balt" supposedly has no meaning, but when combined with the name "Mickey" (based off ofMickey Mouse) it is a multi-use word/term for any situation.
It could be used to express your mood, describe something, or just randomly say it for no reason at all.
A word of caution;
No one will know what you're talking about 100% of the time. Make sure to do it anonymously or with friends as to not come off as an insane person.