FromF-cup +‎-er.

F-cupper (pluralF-cuppers)

1. (informal, rare) Someone with F-cup sized breasts.
   • https://groups.google.com/forum/#!search/%22f$20cuppers%22/muchcleavage/hZmShkI4QwQ/sZf4O6H35zkJ
   • https://groups.google.com/forum/#!search/%22f$20cuppers%22/ginalamarca/z5oY1Z537iw/QoMFqtDNkzcJ
   • https://groups.google.com/forum/#!search/%22f$20cupper%22/amateurteenmodel/EMwfLo3aurI/HsHVO0F_urcJ

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