Like to buy some dog food

MAN – i’d like to buy some dog food !
SALES MAN – do you have dog?

M – yes !
S – where ?
M – at home !
S – I am sorry can’t sell you unless I See the dog !

Next day :
M – do you have cat food ?
S – where is the cat ?
M – at home !
S – sorry can’t give you unless I see the cat !

After 3 days :
Man walks in with a bag

S – what’s in the bag ?
M – just put your hand in !
S – its warm and moist !
What is it ?
M – POTTY !! I want toilet paper!;-)