Because of my Air Cadet background and a disagreement with the RAFGSA 'god of gliding' in the early 70's - when I went back to gliding in the 80's I still had no idea about thermalling LOL
I ended up doing some gliding in southern Africa - boy did they have a good laugh at my 300+ launches and 25hrs TT
Anyway they gave up trying to teach me to thermal so I carried on 'bashing the circuit in our Swallow and then Skylark 3b...and of course one day - it just 'clicked' and I spent the next hour or so turning left - I eventually got bored with that and straightened up - closely followed by the strongest feeling of me going to fall out of the right hand side of the cockpit LOL !
I had to sit there and tell myself not to be so stupid because I was strapped in and the aircraft was still in one piece !
I suppose it was some sort of 'Leans' and I never experienced it again but it would probably have been more worrying for somebody with a non aviation background !