15 possible answers to
Answers with 3 characters: ERR SAP Answers with 4 characters: FLUB SLIP Answers with 5 characters: BONER ERROR Answers with 6 characters: BOOBOO MESSUP MISCUE SLIPUP Answers with 7 characters: BLOOPER MISSTEP MISTAKE Answers with 9 characters: BEINERROR Answers with 11 characters: KNUCKLEHEAD