cheeky

What it means

1. 1.

   Impertinent in a way that is more amusing than offensive.

2. 2.

   Of an indulgence: small, unplanned and mildly naughty. A cheeky pint, a cheeky takeaway.

   This second sense is now the more common one, and it attaches to almost any treat.

In use

• Don't be cheeky to your gran.

  Note: The original sense, mostly said to children.

• Fancy a cheeky pint after work?

  Note: Nothing rude is implied — cheeky here just means 'slightly indulgent'.