I would like to buy some dog food?

man:I would like to buy some dog food?
Salesman: do u have a dog?
Man:Yes
Saler:Where?
Man:at home
Saler:i am sorry cant sell u unless i see dog. its Store policy

next day

man:do u have a cat food?
Saler:where is ur cat?
Man:at home
Saler:sorry can’t sell u unless I see cat

3days later man walks in with bag

Saler:Whats in bag?
Man: put ur hand in
Saler:It’s warm and moist What is it?
Man: potty!! I need toilet paper.;-)
hahaha