Top Definition
An explosion of pleasureable feeling after watching a video or looking at a picture of Tegan Quin. Both men and women are said to have experienced this. Those with Tegan Syndrome, those who practice Teganism and those who have experienced the Tegan Effect are more commonly prone to having one of these on a regular basis.
Friend 1: I was at the mall today and the strangest thing happened!
Friend 2: What happened?
Friend 1: "The Con" came on while I was in H&M and I just had a huge Tegasm in the middle of the store. Everyone was watching, it was so awkward.
by teganeffect June 06, 2013

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