From Longman Dictionary of Contemporary Englishcornycorn‧y /ˈkɔːni $ ˈkɔːrni/ adjective USE somethingtoo silly and repeated too often to be funny or interesting corny jokes I know it sounds corny, but I dream about her every night.
Examples from the Corpus
corny• Hart is an amiable and enthusiastic guide, if a little corny at times.• And for once the finale - everyone coming together to sing Dylan's Chimes of Freedom - seemed not corny but exactly right.• It may sound corny, but I enjoy helping people.• It may sound corny, but the simple fact is, it works.• As if in a corny fiction, it is in the gents that we first identify each other and introduce ourselves.• a corny Hollywood romance• He says a lot of corny retro jive that used to go over big in the 1970s.• For instance, she notes that sunsets may now look corny too much like photographs of sunsets.Origin corny (1900-2000) corny “typical of the country” ((1900-2000)), from corn 