A condition which causes the sufferers to behave like old people. Symptoms include: Limited memory/attention span, back pain, selective hearing, general crankiness, and other symptoms seen in old people.
Geriatrophy mainly afflicts high schoolers who don't want to bother with doing their homework, turning anything in, or otherwise remembering anything.
Mom: Can you turn in these papers tomorrow?
Child: No.
Mom: But you're a senior! You're old enough to be able to handle this. Take some responsibility.
Child: I have geriatrophy. I forget stuff.
by acolorfulcacophony August 22, 2011
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