Sarnie

Tom's mum makes him a sarnie every morning.

I haven't finished my sarnie yet.

Hello my flower, shall I fix up a cheese sarnie for you?

With their jock-straps pinching, they slouch to attention While queueing for sarnies at the office canteen.

In fact no one was playing bingo, 10p or otherwise. Nor had the patrons been enticed by the complimentary shrink-wrapped sarnies and packets of cheese-and-onion on offer in the roped-off ‘Over 18s VIP area’, with its £500-jackpot fruit machines.

Just like Marple, there's a plaque at the London terminus [Paddington] commemorating a fictional character - a polite, friendly little bear from darkest Peru who has a penchant for marmalade sarnies.