Recently I had gone to railway station to receive someone.
One shoeshine boy pestered me and took my shoes [slip on type] for polishing at the platform
He pointed out that I was wearing two shoes of left leg while polishing.
In a hurry , I had worn one out of pair of similar shoes of one of my relatives visiting me.
I ended up with two polished left leg shoes.
After reaching home, both had one shoe polished,lol.
Wearing others shoes sometimes in marriage functions by mistake is common..
I have had chappals exchanged at such functions.
Only a bit of discomfort wearing chappals not your own