The Penny Effect is where girls take pictures of themselves looking down and spot a penny on the ground. The luck from said penny gives their pictures whatever they need to be posted.
Girl 1- I saw where Jenny went to the wishing well in her last selfie.
Girl 2- Yeah, so no matter where she looked down, the pic was gonna be perf.
Girl 1- Abusing the Penny Effect.
Girl 2- Bitch.