my personal; in my opinion; my own
Colloquial, masculine expression used to assert one's personal view or style, often with a self-assertive or slightly rough tone. Common in casual speech and online communication.
Personally, I thought that movie was awesome.
I'm gonna announce my own personal ranking.
Combination of the masculine first-person pronoun 俺 (ore) and the suffix 的 (-teki, '-like, -ish'). The exact origin is uncertain, but it likely emerged in casual speech and online communities as a playful, self-assertive expression.