Yes, the noun boner is an informal word for a mistake or an error.
Boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner boner
Boner Boner Boner Boner Boner Boner Boner Boner Boner Boner Boner
Boner boner boner boner boner boner boner boner boner boner boner
boner boner boner boner boner boner boner boner boner boner boner boner boner
boner
A boner, another boner, and look it there, another boner!
Alice Boner died in 1981.
Merkle's Boner happened in 1908.
Hans Boner died in 1523.
Astrid Boner was born in 1935.
Astrid Boner is 167 cm.
Alice Boner was born in 1889.