wank bank

noun2

1. •
   (slang, vulgar) A sperm bank.

   • Finally, you should send your post to the wank bank, they'd probably classify it as a semen deposit. — 2008
2. •
   (slang, vulgar) Synonym of spank bank (“mental stock of images or fantasies brought to mind when masturbating”).

   • Hosing her down made her jeans cling to her labia even more, not to mention the peanuts she smuggled under her shirt when I brushed her tits. That whole bit of business made a deposit in my wank bank. — 2006