Named after the rubber city, the Akron sling is when you slingshot the used condom into your partner's face after intercourse.
Sonya: Dude, why are you so pissed off?
Chris: She gave me the Akron Sling!
Elyse: AHAHAHAHAHAHAHAHAHA!
Sonya: You were going to do it to her!
Chris: ...
Sonya & Elyse: AHAHAHAHA!