sidesplitting
I am not getting across how sidesplittingly funny this film is.
The humor ranges from so-corny-it-makes-you-groan to sidesplittingly hilarious!
The whole evening was odd and sidesplittingly funny.

SMART Vocabulary: related words and phrases

Humour & humorous
amusingly
bitingly
blackly
bone dryidiom
bring
coruscating
drily
gag
GSOH
jocose
lightly
mordancy
non-serious
pawky
photobomb
photobombing
rib
roast
standing joke
wisecrack