I’ve thought about that episode many times while studying. Bud compares her brain to a shotglass. It can hold a limited amount of liquid, and every time she puts more liquid in there it just gets rid of the old liquid.
I never watched Married with Children, but here’s a similar quote from The Simpsons. Homer: But every time I learn something new, it pushes out something old! Remember that time I took a home wine-making course and forgot how to drive? Marge: That’s because you were drunk! Homer: And how!
Talk about Kelly Bundy effect, today I forgot my ATM pin number and had to call my bank to issue a new one