Facetious
Facetious (adj) /fəˈsiː.ʃəs/
intended to be funny and humorous but in an awkward and inappropriate way – whimsical – flippant – silly – foolish – inane – frivolous – lighthearted – witty – amusing – comical:
This must be just a facetious remark. He cannot be really serious about dropping out of college.
