What is something that no one believed in you when you said/tried and later you proved them wrong?

Lol. I told my dad and it got around that I was going to build a canoe using no nails then I got my Elmer’s glue out , cut some strips of wood and glued them together . It was a canoe held together with only Elmer’s glue then I covered it inside and out with fiberglass 😂 it worked great . Just one of my little stunts I did when I was young ( I was in high school). Not much but it was fun .