This is the funniest murder case I've ever heard of

LOL. Men will do anything for thrills, even going into a suitcase.

Damn. Funny? Hell no!
This seems like a tragic practical joke that went too far, then the devil intervened and caused her to sleep as the man suffocated. That man died a terrible death. I still can’t understand why he entered the suitcase.

They were playing hide and seek. How does a person enter a suitcase even him he was just nuts. What kind of game is that? What if the zip jams?

Some things are just childish, but since they were both drunk, and generally just being silly, maybe she didn’t think about it as she zipped the suitcase, and she didn’t believe that he was seriously suffocating.