Top Definition
When you sigh, and it comes out sounding sexual. It kind of sounds like you orgasmed, but it was just a sigh.
*after the difficult exam*
Susan: *sighs*
Joe: Woah, Susan. Did you just sighgasm?
Susan: What?
Joe: It sounded like a very sexual sigh. xD
Susan: o_o
by cinnamoncaramel March 04, 2011

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