I've been struggling to find a k-drama funny enough to compete with Hana Kimi. Laughed a few times in my girlfriend is a gumiho, 
Marriage Not Dating.
History of the salaryman
short ones: The Flatterer and afterschool lucky or not season 1.
I thought she was pretty was the funniest I've seen so far.   :)
Marriage, Not Dating
she was pretty
High Kick! The Revenge of the Short Legged
totally odd off beat kdrama with unusual male lead 'He who can't marry' <--that kiss scene it's the most awkward weirdest kdrama kiss I have ever seen. Not your typical romcom or romance. I would watch it again! just because it was completely different, slightly older cast for the leads but they were great. lol so much throughout
All 3 "Reply" dramas
Modern Farmers...always stays first for me with comedy XD
Kill me Heal me, Flatterer and The Lover
You Who Came from the Stars
Flower Boy Next Door
Personal Taste
A Gentleman's Dignity
My favorites are Heirs, Marry me or not, Marriage not dating and protect the boss