Use locking pliers/mole grips. If you can get enough purchase you can wiggle those piss encrusted bolts side to side til it snaps. Works a treat on the cistern through bolts too. After learning this my life changed.
Edit: be careful when the bolt is near the porcelain!
NoAd3433 t1_itguvta wrote
Reply to Trying to replace ym toilet seat by myself. Stuck here and am unable to screw off one side. by [deleted]
Use locking pliers/mole grips. If you can get enough purchase you can wiggle those piss encrusted bolts side to side til it snaps. Works a treat on the cistern through bolts too. After learning this my life changed.
Edit: be careful when the bolt is near the porcelain!