The Jesus wrote...
I've never had that problem, but if it happened to me, I'd look them dead in the eyes and say, "Excuse me, can't you see we're doing science here?" If they say something or choose not to leave right away I guess I'd say something like, "This is a delicate procedure. So, if you're not going to leave, I have to ask you to be quiet and let me focus on what I'm doing."
Of course I could do what I always do when I find myself in strange situations, ask whoever it is if they have an extra smoke.
DevilDevilish wrote...
"Don't worry Old man! I'll make sure your daughter is happy and satisfied in my care." or "Don't worry Dad! I'll be sure to take responsibility as a man."
Something along those line?
No, I would really be at a loss of what to do or say. 'cause her parents would most likely try to snap my neck in they found out, and my parents would disregard me as a son.
LOL hahaha