Rolls

A family bought an apartment and started interior decorations. 

Wife tells her husband:
- Honey, go to the neighbors and ask how many rolls of wallpapers they have bought when they were decorating their walls.
The husband went to the neighbors and he was told:
- Twelve rolls.
The family bought twelve rolls, started decorating but at the end six rolls were left unused. Angry husband goes to the neighbors:
- Hey you, shitty pigs, couldn’t you have told me the truth? We have six rolls left now.
- We have six rolls left as well, - answered the neighbor.