Marge Simpson: How did the pig tracks get on the ceiling?
Homer Simpson: Spider-Pig, Spider-Pig does whatever a Spider-Pig does... Can he swing from a web? No he can't, he's a pig. Look out, he is the Spider-Pig.
Ralph Wiggum: I like men now!
Grandpa: Homer, what the hell are you doing?!
Homer: risking my life to save people I hate for reasons I'm not quite sure why!
Moe Syzlak: Are you saying we're trapped like rats?
Russ Cargill: No, rats can't be trapped this easily. You're trapped like...carrots.
Tom Hanks: Hi, I'm Tom Hanks saying if you see me in public, please leave me be.
Marge Simpson: I hate being late.
Homer Simpson: Well I hate going. Why can't I worship the Lord in my own way: by praying like hell on my deathbed.
Marge Simpson: Homer, they can hear you inside!
Homer Simpson: Relax. Those pious morons are too busy talking to their phony-baloney God.
[Stony stares from the congregation.]
Homer Simpson: Hey, how you doing? Peace be with you. Praise Jebus.
Homer: We have a great life here in Alaska, and we're never going back to America again!
Answer: Homer has been known not to make the smartest decisions, and the decisions he does make, he makes without fully thinking them through. Clearly he wanted to get some donuts as quickly as possible without thinking of any other ways, so he decided to ditch the silo in the lake as it would be the fastest way of getting it off his back, even if it's not the smartest. Also, putting that aside, he likely wanted his own pick of the donuts rather than have Lenny guess what he wanted.
Casual Person