Uncontrollable laughter while high...

So I've been smoking regularly for about two years now, and just recently (first happened three months ago), I've gotten myself a minor "problem"..
Through those years of smoking I used to get a chill, relaxing high, always. I still do if I smoke by myself (usually do). The thing is that as soon as I smoke one with other people, I get this uncontrollable burst of laughter.. I mean someone can talk about hairdryers and I'll be going bin laden mode on the couch beating the shit out of it with both my arms.. Of course, it feels fucking good when I'm there, but the day after (and while I laugh) I realize that I most likely look like a mentally deranged idiot.. Why this sudden high-change?? I miss the chill highs with friends.. Any idea how I can stop laughing my ass off all the time and actually relax with friends? Help please..

 

Well yeah I definitely enjoy it! However I'm thinking about the others around me.. they probably don't think it's fun to sit and chill next to a guy beating his shit like it was his last day alive..