Ok so what if aliens don’t have a concept of hiccups? like they understand laughter, but they don’t have diaphrams so they’ve never experienced a diaphram spasm from laughing too much. and then they witness a human hiccuping? but not one of those squeaky ones, i mean the huge, heaving, gasping ones. the ones that take all of the air out of you and make you cry, but you can’t stop because the hiccups themselves make you laugh. and the alien flips the crap out because oh my lord Zarp’s tenticles the human is dying!!! but then are confused because the other humans aren’t doing anything? the hiccups are making them laugh harder?
just a thought i had, feel free to add on if you like!