I've earned the nickname "The Human Jukebox" because of how many songs I have crammed into my head and the way that they're all attached to trigger keywords.
If someone says a certain word, I have to sing the related song. And I have to sing at least one whole verse and/or chorus of it. If someone tries to talk to me while I'm doing that, I will not answer until I'm done. Or, I'll answer very briefly and then continue.
I try to do it quietly at work, like very very softly under my breath, but it has to be aloud and not just in my head.
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~I wanna fly high, so I can reach the highest of all the heavens
Somebody will be waiting for me, so I've got to fly higher~