This is the 7332nd most frequent French word.
oim
"Oim" is French slang for "moi" (me), often used in Verlan, a form of language play involving the inversion of syllables.
Here, 'oim' is used as a colloquial inversion of 'moi', commonly seen in youth slang.
Oim, je vais à la fête ce soir.
Me, I'm going to the party tonight.
In this case, 'oim' stresses the speaker's role in the context of offering help, underlined by its informal register.
Tu peux compter sur oim pour t'aider.
You can count on me to help you.
The word 'oim' replaces 'moi' informally, to indicate a personal opinion in a casual context.