An elderly individual who is highly sexually active
"I hear Quincy down in hall A of the Happy Homecomings retirement home is a fuckasaurus rex!"
"o rly?!"
by Phantomman December 20, 2005
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An absolute unit they often participate in orgy's and large sex circles they can often take women and men not gay tho |; they also must be older than 60 to be a prehistoric fuckasaurus rex
Hot girl: I see that guy absolutely slay those seven girls
Gay friend: yes I'd call him daddy

The fuckasaurus rex: thank you friend
by Cumbobulator March 18, 2021
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