Most are familiar with light overcalls with good suits to help partner finding the best lead. What may be overlooked is that overcalls may be made for the opposite reason, to find out what YOU are going to lead.
Still 1st division in Denmark, round-robin 36 board matches. I was dealt this one (red/white):
After pass on my right, I passed and LHO opened 1C. My RHO responded 1D and I slipped in a seemingly meaning-less 1S, Lauria-style (he's overcalling-crazy btw - and ranked no 1 in the world).
The next hand doubled, showing a good hand without suitable rebid and after partner passed and the guy on my right rebid 1NT, leftie raised to 3NT.
So now we pretty mych know a spade lead is unlikely to be successful. Therefore I led a heart.
Jackpot and we cashed out for +50 and 11 imps vs 520 and the other table.
If you think the opponents messed up an easy board, you are maybe correct, but this was arguably one of the best pairs in Denmark and when playing good opponents you certainly need to 'shove' them a little bit.
For whatever reason we won the imps, and you might come to a different conclusion than I do as to the reason for that occurence, we happily took them.