Following Turkbernd's recommendation I just finished a Serbian comedy, Ko To Tamo Peva (Who is Singing There?).
This is a story of a bus ride from bumfuck nowhere in Serbia to Belgrade during the days preceding the German invasion of Yugoslavia in 1941. The colorful band of passengers have to enjoy various trials of the often roadless roads, and each other's companionship.
The structure of the film is signaled by musical interludes performed by a not less colorful duet.
I didn't have to hold my stomach for laughing, it's not that type of comedy, there aren't any jokes blowing up left and right, it's more of a low key absurdity that goes through the entirety of the film, and the little details they put there occasionally. Also there's a bit "wtf is going on" added with those details. Some life lessons also shared, and it's served with an almost ethnographical atmosphere.