Quote: Ben @ December 20 2009, 11:18 PM GMTIt always irks me.
Me too - I'm not all that interested in what they've brought from the shops.
A Dilemma Page 2
Although in the instance of shopping, brought and bought are both technically accurate, even if the intention of the speaker isn't.
Nice edit 
Steve, I liked this a lot.
I don't have a problem with brought/bought or, for that matter, inferred/implied as most people aren't writers/anal and wouldn't get it.
But if you're still looking for something how about:
"I told him a few home truths, and it had the desired affect."
"I presume you mean effect?"
I think implied/inferred works better as it is purely a confusion of meaning, whereas with bought/brought the confusion arises from them being near homophones - which has the disadvantage that the audience might fail to pick up on the mistake and be confused by the correction.
Other suggestions: incredible/incredulous, disinterested/uninterested, or something my boss is always pulling me up on, compared to/compared with. (He also tells me off for saying I "met with" someone, rather than just "met" them.)
The misuse of then and than really f**ks me off. It may not be of use to this sketch but I just wanted to get that off my chest.