Bank's liability

I expected as much, but I couldn't be sure because this brick-chewing stuff just doesn't ring any bells with me, so I have no idea what you were on about.

Its an old Tom O'Connor scouse joke...

Scouser says to man who is annoying him 'Hey Wack! Yew talking to me or chewing a brick? Either way you lose teeth'

together with

'Hey Yew! Wanna wake up with a crowd round yer?'.