Slang for crazy or deranged. In this case, "bananas heavy" would probably equate to "crazily heavy", which would then equate to "crazily large for the functionality".
The story of bananas is a lot shorter and more mysterious. Here the OED can reliably get us back only to 1968, when a University of South Dakota publication called Current Slang reported that Kentucky college students (of “both sexes”) were using bananas to mean “excited and upset; ‘wild.’”
The story of bananas is a lot shorter and more mysterious. Here the OED can reliably get us back only to 1968, when a University of South Dakota publication called Current Slang reported that Kentucky college students (of “both sexes”) were using bananas to mean “excited and upset; ‘wild.’”
<https://www.straightdope.com/21344487/how-did-em-nuts-em-and...>