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Slang term used to define an individual whos actions are make it appear that they have switched (waffled) their sexual preferences. More often than not a man or woman who appears to their friends to have recently flipped their sexual preferences from heterosexual to homosexual.
"Man did you see jimbos shirt? yup pink, he's a swaffler"

"that hot chick was on bruce's dick all night and he didn't hit that? yup, hes a swaffler"
by Santacrawz December 20, 2006
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