(CNN)Chris Pratt wants people to know his true style is more sweat than swagger.
Pratt, 37, was named "InStyle" magazine's September "Man of Style," and he, apparently, finds the title hilarious.
"I mostly like T-shirts with American flags on them," the actor wrote in a captioned photo from the InStyle shoot on Instagram. "Usually I go for the one on the top of the 'shirt pile' but I want to promote this nice magazine called In Style Magazine because everyone who was there that hot day we were doing the photo shoot was really nice."
In another post -- a photo of Pratt looking effortlessly rugged -- he described what's actually going on.
"In this photo I try to casually put my left hand in my pocket but the pants are so tight I get the tip of three fingers in. Also I was sweating so bad they give me that hat."
More self-deprecating humor followed.
"Here I'm pretending to itch my neck in a Canadian tuxedo," he wrote. "Also, I am squinting. And thinking, 'Hmm, is it smokey in here? Am I allergic to smoke? Does it make my neck itchy?'"
Pratt saved his best post -- a photo of him standing next to a horse -- for last.
"I'm like the horse whisperer," he wrote. "Right after this I got it to stand on one foot and break a board with a blind fold on. Then I jumped it. Over a mountain. Not to brag."