Ever remember something but only about 90% of it and then it's stuck in your head for the day and it's driving you up.the.walls?
That's where we're at with this question from Jen Grace in Louth.
Jen got in touch with Dermot and Dave after many hours of trying to find a particular classic ad.
Here's what we know:
It was an 'Oliver Twist' style ad with a boy with blonde hair.
When he asks for some more, the man roared 'MORE'.
It was in the 80s!
We had thousands of suggestions from listeners, but Jen says that it is not these:
We know! Our heads are wrecked too!
Can you remember the ad?