Phrases that are likely to get you into trouble:

It won’t take long

Give it here, I’ll do it

Any phrase with the word ‘just’ in it, e.g. ‘you couldn’t just…’, ‘I just need a few moments…’ ‘just one more then…’

Ditto: ‘nearly’, ‘only’…

What happens if I press this?

He’s perfectly harmless

Marry me

I like children

I was only joking

(NB: never use these last three examples in the same conversation or, for that matter, even the same relationship)