Me: Alan, you have endless acres of grass at your disposal.
Why are you eating a tumbleweed?
Alan: Tastes good. Besides, I like a challenge.
Me: That tumbleweed is about 12" across.
The hole in your grazing muzzle is an inch wide.
Do the math. It won't work.
Alan: Tell me about it. So damned frustrating.
Alan's perseverance paid off.
He slurped up the tumbleweed like a string of spaghetti...
...until every last bit disappeared through the hole.