There are favours, and then there are FAVOURS.
A cup of sugar is fine, but I’ve always thought that the loan of a lawn mower was a bit too much. It’s all a matter of degrees. You might be happy to do any favour asked of you, or you might have limits based on who was doing the asking.
Boris lives by a strict code, so when Barry asked a favour, he did not hesitate, even when Barry pointed out the danger.