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You probably can recite 2 birthday songs from memory, but only 2.
(sh.itjust.works)
A "Showerthought" is a simple term used to describe the thoughts that pop into your head while you're doing everyday things like taking a shower, driving, or just daydreaming. The best ones are thoughts that many people can relate to and they find something funny or interesting in regular stuff.
I can do 4. Do I win something?
Just in case:
Happy Birthday (obviously) Birthday (The Beatles) Feliz, feliz en tu día (Los payasos de la tele) Las Mañanitas (traditional Mexican song)