To burfle is to commit an error in speech in which two or more phonemes are transposed, or one or more phonemes are substituted.
A burfle is simillar to a spoonerism but with a much wider scope for error.
A true burfle should provide some measure of amusement to listeners, and be unintentional on the part of the speaker.
"The scouting organisation recently voted to ban lesbian beaver levers"
"Damn I really burfled lesbian beaver leaders, that ususally only happens around things that make me nervous, like hyperdeemic nurdles"