Wheelchair Guy: I'm still trying to figure out how to strap myself onto this so I can serenade people as they ride.  Too bad there's not a bar or something across the back that we could attach a trailer hitch to. Then we could put one of those small trailers from harbor freight on the back for me to ride on.*
Me: That would be pretty heavy for the horse, having to pull around the carriage and a trailer and 4 people.
Wheelchair Guy: Well she's a morgan, isn't she?
Me: No, she's a percheron.
Wheelchair Guy: That's like a morgan right?
Me: Not really, percherons are a lot bigger
Wheelchair Guy: :wheels away:

*I was going to try to photoshop a picture of this, but apparently the Amish have already done this. 

The next time he mentions that, I'll just tell him he has to get his own horse: