Which number comes next in the following sequence?

On an electrician's truck, 'Let us remove your shorts.'

Outside a radiator repair shop, 'Best place in town to take a leak.'

On a maternity room door, 'Push, Push, Push.'

On a taxidermist's window, 'We really know our stuff.'

On a butcher's window, 'Let me meat your needs.'

On a fence, 'Salesmen welcome. Dog food is expensive.'

On a muffler shop, 'No appointment necessary. We'll hear you coming.'

In a dry cleaner's emporium, 'Drop your pants here.'

On a desk in a reception room, 'We shoot every 3rd salesman, and the 2nd one just left.'

In a veterinarian's waiting room, 'Be back in 5 minutes. Sit! Stay!'

In a Beauty Shop, 'Dye now!'

In a restaurant window, 'Don't stand there and be hungry, come in and get fed up.'

In a cafeteria, 'Shoes are required to eat in the cafeteria. Socks can eat any place they want.'