A really old lady with gigantic boobs.
Did you see the size of John's grandma's tits? What a boobasaurus!
by Improbable Cause August 20, 2011
1 more definition
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