clunk·er 
/ˈklʌŋkɚ/ noun
plural clunk·ers /ˈklʌŋkɚ/ noun [count] chiefly US, informal 1 : an old car or machine that does not work well
▪ My first car was an old clunker that kept breaking down. 2 : something that is a complete failure
▪ That joke was a real clunker. ▪ The director's recent films have all been clunkers.
▪ My first car was an old clunker that kept breaking down.
▪ That joke was a real clunker. ▪ The director's recent films have all been clunkers.
