Not so much embarrassing, but funny (I think anyway).
When I was in Northern Ireland we had a crappy old Ford Escort as a works car. It was terrible in every way, and the colour, oh no, imagine you're a kid painting water colours and think of the colour the water was you use to rinse your brush with. That was the colour. The brown bomber we used to call it.
Anyway, I noticed that when at idle speed in second gear, if you gently tapped the accelerator the whole car would violently rock backwards and forwards so violently the whole car would sound like it was falling to bits inducing stomach hurting laughter.
We were driving through a village green from Londonderry to Omagh in said brown bomber when the original 'Spirit in the Sky' came on the radio. I turned the radio right up, wound all the windows down, flashed the headlights, sounded the horn, put the wipers on, did the wiggly worm and rocked it so violently we were all crying with stomach hurting laughter, as we got looks of disgust and cries of 'ya englesh barsardddddds'.
I'll remember that for a long time!