The Cameo: Chloe's mom, Frank & Esther Exposition made cameo appearances in this episode.
Stating the Simple Solution: When Bingo and Rolly hitch a ride to Bob's mom's house in the mail truck, Bingo suggests a series of complicated maneuvers that will get them over to her mailbox so they can post Bob's Mother's Day card. Rolly instead has them hide in the mail carrier's satchel, so they can simply place the card in the mailbox as they pass by.
