Agnes Skinner is Principal Seymor Skinner's very controlling elderly mother. Agnes was actually revealed to have adopted Seymour during "The Principal and the Pauper." Agnes also often serves as a friend of Marge in many adventures.
Principle Skinner: Oh, licking envelopes can be fun! All you have to do is make a game of it.
Bart: What kind of game?
Principle Skinner: Well, for example, you could see how many you could lick in an hour, then try to break that record.
Bart: Sounds like a pretty crappy game to me.
Principle Skinner: Yes, well... Get started.
I was in love with a soldier boy on leave from Korea. It was a fifties style of romance, five minutes of sex and a lifetime of regret. He went back to his war and I went back to my dream of pole vaulting in the Helsinki Olympics. But there was a bump in the road, a bump named Seymore.Agnes [in flashback]