Ok so I've come upon this more than once and I feel I've dealt with it well, it never seemed to affect the broad too much.

Guy comes up and just leaves his number/card etc while me and/or a few guys are at the table with a girl(s)

I just laugh because literally I don't care it's just a date. This a few times has come in the form of an actual physical approach and chat.though much rarer.

Is it correct in my summation to not break frame, laugh and move on like it never happened?