off-mark
lacking relevance; unrelated; unconnected.
My answer to the query does not seem to be off-mark.
Off the Mark
A hilarious comic panel by Mark Parisi. Running from September 1987 to the present, Parisi has been making the cartoon since he was in his mid-twenties, and he's still going strong after more than 35 years. With more than 12,000 panels to look through, you'll never be bored again.
Off the Mark is so funny. I swear Mark Parisi never runs out of ideas.