Top Definition
the dwindling of the ol' "urge to merge" with old age; a decrease in one's sexual appetite in old age.
My great uncle Bucksnort did not display any signs of obsolagnium whatsoever. At age 96, he was putting the blocks to Aunt Mabel like a jackrabbit on steroids.
by weave September 21, 2003

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×