This happens with me too. Like I get it why they would. Like there are times when I just go sssssssssssssssssss, and even people who are always supportive laugh cause it does get funny. It hurts me and especially when It happens with your crush and all , that's even worse but there are times when I laugh at it too. Just imagine someone just go ssssssssssss. Idk maybe it's just me but yea I laughed at it too. It really hurts but sometimes you also have to understand it might genuinely be so bad they couldn't hold their laughter. The way they said it might be bad but all I'm saying is that sometimes the way we speak can be really funny at times. It's sad but it does happen