A guy takes a fellow pilot flying in his sea plane, and they decide to do a few approaches at the friend's airfield. At the last moment before touchdown the owner says,

"NOOOO, Go around, we've got floats remember?"

After an uneventfull landing at a nearby lake the owner, whilst getting out of the plane says: "Thanks for reminding me, that could have been very embarrassing back there"

After which he stepped right into the lake...