Can I have your number?

I used to watch these storytimes where this unknown person would randomly come up to another person and ask for their number. I've thought of what I woudl do in this situation. if someone asked "hey, can I have your number?" I'll say "Yeah sure", and then give them a scam number that keeps on calling me. I know that's mean . . . BUUUUUUUT Atleast I gave them a number, maybe theyll fall in love with the scam caller instead.