Claire says this all of the time in the Outlander series. I've never heard that particular expression before, is there any significance to it?

Thanksgiving, 2011
Amanda & Joe, June 28, 2008
Blog of Randomness
BFP 6/10/11; Missed m/c at 5wk6d; D&C 7/18/11, Triploidy BFP 11/24/11, please be our sticky baby

Re: "Jesus H. Roosevelt Christ" ??
I'd never heard it before but that was my guess... especially when she added another word in there, lol.
I had heard/used Jesus H. Christ before, but never with Roosevelt.
Funnily, in Lamb, they "explain" what the H stood for, but now I forgot.
Said with love.
my read shelf:
Wes: 10/8/2012