Nah, just silliness. really.
To "mind" someone is sort of to be wary of them. Or get them to be wary of you. Or just listen.
I say to Diz all the time, "Mind yourself.
MIND yourself now!" when he gets in my way and I nearly fall down the stairs.
So it's a way of saying I take what you say seriously.
But hey, flirty I can do
If you were a milkshake I'd suck you so hard I'd give both of us a headache. Oops, no. That's just rudey.