Becoming lightheaded on purpose?

Has anyone exhaled really fast, and then became lightheaded? Like say, you blow balloons or candles, only you do it for about 30 seconds, in a very fast manner. I know this is probably bad, but it feels really good actually. Like a small 20 second buzz. Is there even a term out there for it? I know some kids do this, and then choke themselves for an extra buzz, but i know THAT is dangerous. Has anyone tried it before?