Greeting card

The greeting card (called "comrade greeting card" by Bender) was a singing card bought by Bender for Mom on Mother's Day. When the robots rebelled against humanity, the greeting card incited the lazy Bender to loot and destroy. When it was revealed to Bender that the robots planned to ban alcohol after the overthrow of humanity, Bender destroyed the greeting Card and joined the humans.

Song Sung
You created me Mom so I guess you're to blame For the love that I feel just from hearing your name You're as tender as corned beef and as warm as pastrami I love my Mommy

Trivia

 * His name appeared on the Robot Devil's "Wheel of Robots". However not only is he deceased, but has no hands to switch with Fry (though this could be a way that the Robot Devil could have cheated Fry if the name was chosen).