Season 4, episode 10 'Lisa's First Word'
"Well here's what they're asking."
"Ohhh I can't afford that!"
"Alright son, I'll sell this dump and write you a cheque"
"Dad, first you give me life, now you've given me a home for my family, I'd be honored if you came to live with us."
"Thank you"
"So how long til you shipped Grandpa to the old folks home?"
"About 3 weeks"
"hahahaha"
Homer couldn't afford it and could only buy it when Grandpa sold his house and gave the money to Homer.
>>939801
Correct.
But also the episode with the Foster dad. Homer is supposed to pick up Bart from soccer practice and forgets, and one shot includes Homer in the Rumpus Room watching tv.