Unexpected token < destroys other site functions

Im getting this error for this line of code

    jQuery("body").html(jQuery("body").html().replace(/Some Text/gi, "<strong>Some Text</strong>"));

I am just trying to attach a strong tag to every instance of the words "Some Text" across site pages.

But this error actually destroys my other site functionalities, specifically AJAX stuff.

Error: Uncaught SyntaxError: Unexpected token <

Further info on error: (anonymous function) @ (index):227