"Cheeky sense" refers to a playful and slightly naughty attitude or humor. It usually involves acting in a witty or lighthearted manner, sometimes with a hint of mischief. Full definition
It proves that crackingly fast entertainment doesn't have to be mindless, and it manages to do so, with an endearingly cheeky sense of humour. (rottentomatoes.com)
Overall, Tokyo Twilight Ghost Hunters» references and general cheeky sense of humour do a great job of adding much needed levity to the occasionally somber plot. (videochums.com)
Kingsman is the full extension of Vaughn's cheeky sense of humor. (seligfilmnews.com)