Ever do something foolish and your mind simply won't let you live it down?

Visit the mini meditation page to learn the steps to inducing a light state of relaxation.

When you are fully comfortable, repeat the following:

I see the moment
As through a train window
As it whips past.
Watch it fade into the distance.
Bye bye

Repeat it as often as you like. If you are relaxed enough, the suggestion to overcome an embarrassing moment will stick and the importance of the incident will diminish.

Note:
I realize there are many different ways to approach this. Sometimes the strategy for dealing with such a situation is embrace it, to own it, rather than diminishing it. It all depends on the situation and what you would like to accomplish.