2B你可知我碍你
[2b nĭ kĕ zhī wŏ ài nĭ]
It's a playful expression with an added English word. It might mean '2B(Dumb), do you know I'm troubling/bothering(碍)you?'. However, the exact meaning depends heavily on context. This style mixes language for a humorous or expressive effect, often found among young Chinese netizens.