What does it mean?
handsy = .................
to get handsy = .............

And, how do you say this another way?
If he gets handsy, let me know.

Question

What does it mean?
handsy = .................
to get handsy = .............

And, how do you say this another way?
If he gets handsy, let me know.

Answer

Getting handsy with someone means using your hands on someone, touching them, probably inappropriately.
Another way of saying " If he gets handsy with you, let me know" might be " If he touches you (inappropriately)  let me know".

Answer

being very touchy with the hands