Top definition
Person whose constant happiness, cheer and pep comes over as superficial, artificial and fake and thus annoys everyone surrounding them
The yayhole's constant cheer in troubled economic times was a source of much contempt.

The yayhole at work constantly celebrated every minor occasion, forcing everyone into the meeting room to half-heartedly sing, swap cards or eat donuts.
by UKinNY March 09, 2011
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