To have egg on one's face:
"To be extremely embarrassed. Usually the embarassment is the result of one's own actions. Not sure of the origin, but it may come from when clowns are at a circus and they have eggs thrown at them because of their goofy acts or when actors had eggs thrown at them performing in plays a couple of centuries ago." -Urban Dictionary
USA PRESIDENTIAL DEBATE #1.... Yep! On guess who?
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