A Jugasaurus-Rex is the name given to a female with extremely large breasts.
The phrase was made famous by Neil from t.v show 'The Inbetweeners' where he spots a girl in the park and says, 'Hey guys, look at that Jugasaurus-Rex!'.
'Hey Lewis, Jugasaurus-Rex at 5'o'clock!'
'Woah, Your a right Jugasaurus-Rex!'
'Don't you think that Pamella Anderson is just one huge Jugasaurus-Rex?'
by Barry Fluffers August 04, 2009
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