When Danita and Ricky are having ice teas before Danita walks off on Ricky, the amount of tea in Ricky's glass slightly changes between shots.
When Ricky and Seth are having dinner with Ben and Danita, the amount of water slightly changes in Ricky's glass.
After dinner when Ricky and Seth are having dessert with Danita and Ben, the salt and pepper shakers alternate positions in between shots.