LOL should work, if not add "klote" instead of "normal" f-king and you'll have the desired result.
Spanish and Italian are none mechanical curses, so they won’t work anyway, but they are great with a beer or two and a broken heart
Lifting the whole engine out won't work? Bolt should follow then?
I feel your "joy" my truck is build with pre-rounded bolts and nuts which will break when touched if embedded in cast iron and will be incredibly tough when just going through something with an ordinary nut. PO must have used the opposite of WD-40 on all of them and pre-cut the ones that go in to the engine block.
Aren’t old bolts wonderful?
Enjoy, the better the result will be. And remember it doesn’t have to be today or even tomorrow, but somewhere in the near future you’ll manage to get it out.
Good Luck
Richard