The guests were always this-worldly, and often profane.

The monsters are identified not as trolls, a word apparently not available in English at the time, but (among other things) as wargs, whatever that means; Grendel is called a heoro-wearh at line 1267 and his mother a grund-wyrgen at line 1518.

I’ll go skiing again after my bones knit.

And farewell cruel posts, rough threshold's block, / And doors conjoined with an hard iron lock!