Place it as the immediate reaction after a failed joke or awkward line, not under dialogue. Follow it with a nope meme sound button for a rejection, or precede it with a trololo song sound button for a longer troll build-up.
關於此聲音
This clip is Tidus letting out a loud, deliberately forced series of ha ha ha laughs lasting just under three seconds. It feels intensely awkward and cringe-funny, because the laugh is clearly put on rather than natural. It comes from Final Fantasy X, from the famous laughing scene with Tidus and Yuna.