O Holy Donut

I’m the dumb one in this story. My baby had some breathing trouble and was hospitalized for a month and a half prior to surgery. One of the times I was staying overnight, a respiratory therapist I hadn’t met before came in to check the settings on the oxygen. I saw she had a cursive font tattoo on her arm. Confused, I asked,

“Does your tattoo say, ‘Thy will be donut’?” 

The therapist showed me her arm and said, “No, it says, ‘Thy will be done’.” What I had taken as “donut” was the word “done” with a cross after it.