Gordon, Duck and others in “Tender Engines”

[disappointed after hearing Diesel's remark the day before] I'm not happy!

I know. It's boiler-ache.

It's not boiler-ache. It's...

Of course, it is. That water's bad. Have a good washout, then you'll feel a different engine. Your boiler must be full of sludge.

Don't be vulgar!