Cheesy

adjective

1. Overdramatic, excessively emotional or clichéd, trite, contrived.

   "a cheesy song;  a cheesy movie"

2. Of or relating to cheese.

   "This sandwich is full of cheesy goodness."

3. Resembling or containing cheese.

   "I like pizzas with a cheesy crust."

4. Cheap, of poor quality.
5. (of a smile or grin) Exaggerated and likely to be forced or insincere.