Whoa This Is Heavy Back To The Future T-Shirt Size:2XL The shirt shows Prowl

The shirt shows Prowl

Duff is promoted by the instantly recognizable mascot Duffman

The song was the band's first number one hit

" The distressed lettering adds a vintage feel

and much of A Goofy Movie revolves around Max's desire to attend a Powerline concert

Whoa This Is Heavy Back To The Future T-Shirt Size:2XL The shirt shows ProwlThis Back To The Future t shirt features Marty McFly's catchphrase, "Whoa This Is Heavy". In Back To The Future, Marty McFly would say "Whoa, this is heavy", with the word "heavy" used as slang for something that is intense or serious. When Marty traveled back to the year 1955 in Doc Brown's time traveling DeLorean, and said this phrase, Doc asked why things are so heavy in the future. He thought there might be a problem with the Earth's gravitational