How to sign: an unintentional but embarrassing blunder
"he recited the whole poem without a single trip"; "he arranged his robes to avoid a trip-up later"; "confusion caused his unfortunate misstep";
Similiar / Same: misstep, stumble, trip
Categories: bloomer, blooper, blunder, boner, boo-boo, botch, bungle, flub, foul-up, fuckup