Place it right after the setup line in a chat screenshot edit, then follow it with the Kiko laugh to keep the joke going before the next reply appears on screen.
Über diesen Sound
This short Portuguese voice clip lasts about six seconds and captures someone laughing for no reason, with the words carrying the joke rather than a punchline. It feels light, silly and contagious, the kind of laugh that makes a chat feel less serious. Hearing it is enough to picture a friend cracking up at nothing at all.