Triple Pre-Nut Theorem Share definition Flag (N) The event of getting three nuts out when your girl says she's coming over so you can have more safe sex or shoot blanks. Sheeit i gotta get my triple pre-nut theorem out before kylee comes over. Triple Pre-Nut Theorem by Scoocher2677 September 3, 2017 Get the Triple Pre-Nut Theorem mug.