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1. To stutter one's speech in such a way as to inhibit comprehension.
2. To be evasive in speech or action.

Possibly derived from the Yiddish word "Fonfer," meaning mumbled, incoherent or accented speech.
1. "You really phumphered that joke. Why don't you tell it again?"
2. "Stop phumphering and get to the point."
by mycrows February 10, 2010