Possessive + gerund + object pronoun [duplicate]
In school I was taught that gerunds take a possessive pronoun and that's that. But it kind of makes sense if you consider that by definition a gerund is a present participle masquerading as a noun. If we substitute an actual noun, we might get something like, "your disturbance [of] me at lunchtime." The subjective "you" would never fit in this construct, and thinking of "bothering" as a noun should help make this rule clear.