I told him drizly delivers to the door
Why did you tell him that?
I thought he was too dumb to notice the difference.
It is wrong to lie to people when they do not understand how things work. You should tell them how the service works so he can make good choices.
You're dumb! You only figured it out when you tried to order it yourself. This was funny so I'm not going to stop him.
It's not very nice to lie to someone just so you can enjoy their misfortune. If this is a friend of yours, doing that too often could end the friendship.