Experiences - Was that a green out?

[Stationary Traveller]

Hello,
This is a story a frog told me in a helicopter. Here it goes:
"Yesterday I indulged in huge amounts of cannabis. I've never greened out or whited out before. Upon my taking the last hit, I knew I was up to something big and boy, after a couple of minutes I was so overwhelmed by how high I was. My ears started ringing to the point that all I heard was my ears ringing. I also felt like I was paralyzed, being able to move only slightly, I don't know how long this went on for, I wasn't aware of the time, but after some time I turned on the lights to see if that would help. I lied down (all at the same time repeating to myself that this will soon go away) and tried to just not think at all. There was constant nausea but I somehow managed to not throw up my only meal of the day. After about 15 minutes (thats my guess, but I've no idea about the actual time) I was able to get up and think sensibly again."

So what happened to the frog? He's never had such an experience, he's not necessarily worried or scared but wants to know if other SWIMs had had similar experiences. And yes, the frog is sure it was just weed and nothing funky.