I made a new thread because I couldn't be bothered finding the old one haha besides this is new information!
Chicon 2016 (literally just watched the vid like half an hour ago)
Jensen was describing crawling out of his grave in Lazarus Rising (4.01) and how it was so hot and he was sweating...
"It was allergy season too..."
He IMITATED his sneezes.
Then DESCRIBED how he sneezes.
Guys, I can't breathe.
That's the link to the periscope. There'll be new videos (better quality) soon when people can upload them.
It's at like 51:00 
Ohhhhh my goodnessss...