muff(redirected from muffing)
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fluff one's linesand blow one's lines; muff one's lines
to speak one's speech badly or forget one's lines when one is in a play. The actress fluffed her lines badly in the last act. I was in a play once, and I muffed my lines over and over. It's okay to blow your lines in rehearsal.
dive a muff
tv. to perform oral sex on a woman. (Usually objectionable.) Tod likes to dive a muff every now and then.