Fred's Last Note

Ol' Fred was in the hospital, near death. His family called their priest to stand with them and give the last rites.  
As the priest stood next to the bed, Ol' Fred's condition appeared to deteriorate and he motioned frantically for something to write on.  
The priest lovingly handed him a pen and a piece of paper, and Ol' Fred used his last bit of energy to scribble a note, then he died.   
The priest thought it best not to look at the note at that time, so he placed it in his jacket pocket. 
As Ol' Fred's funeral was about to finish, the priest suddenly remembered the note and pulled it out of his pocket.  
He said, "You know, ol' Fred handed me a note just before he died.  I haven't looked at it, but knowing Fred, I'm sure there's a word of inspiration there for us all."   
He opened the note, and read, "Dear Father, you're standing on my oxygen tube!"