What does ”めえ” in ”めえ～て注意してよ” mean?


[Source](https://youtu.be/Z0ZZOfQZ_0Y?t=153)

I may have heard it wrong, so the phrase I'm asking for can be heard from the
link above.

I was watching a Youtube clip and I heard "めえ～て注意してよ", and I suppose that "め"
is something you say to show disapproval? But I couldn't find anything on the
dictionary so does anyone know what "め" means in this context and how to use
it?

