Robin Hood did the exact same thing when we first brought him home, and still does sometimes!
But our conclusion to it is he was a messy drinker as a little one--- we had the normal guinea pig/rabbit size water bottles, and we realized the ends were pretty big for his little mouth. His chin/nose would get all wet. We think he couldn't get his mouth completely around it and so it leaked out the sides. We got him some additional hamster size water bottles and he still seems to prefer those.
We've also had very leaky water bottles before that were the culprit. Sometimes they don't leak at all until the water temperature changes or the temperature of the room changes. When we put fresh water in them ( I know not to use cold, but coming out of our water dispenser it's still cooler than room temperature ) they drip a lot until the water warms to room temperature.
Another thing Robin Hood seems to do more than Friar Tuck is when he does zoomies around the cage perimeter or happens to popcorn there, he brushes into the water bottles and causes water to come out; getting the floor or his back wet.
I'm really curious about anyone else's input on this, too, because Robin Hood still seems to cause more wet floor under the water bottles than Friar Tuck ever did. But I don't see him drink any more that Friar Tuck, either

sorry if i rambled, and hope this helps!
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