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2.
A really old lady with gigantic boobs.
Did you see the size of John's grandma's tits? What a boobasaurus!
by Black Bowler 2 August 20, 2011
 
1.
sucking, licking, almost eating a pair of breast and nipples like a hungry dinosaur.
"he sucked my tits like a BOOBASAURUS".
by RICK THE RETARD December 03, 2007