When you see references of things you like. For example:
(Only people who like vocaloids will get this.)
Me: Sees banana at the store. "LEN KAGAMINE OMG OMG OMG
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(Only directioners will get this, I should know, my bff is one)
Sees spoon, OMGGGGGGGGGG
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Sees bow and arrow, OMGGGGGGGGGG KATNASS
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hi.