Tyreek Hill's former teammate, Terron Armstead, tells TMZ Sports the wide receiver was in so much pain after dislocating his knee on Monday, he actually had to laugh to prevent passing out.
Armstead said on Tuesday the Dolphins star called him just hours after he sustained the gruesome injury during Miami's "Monday Night Football" clash with the Jets ... and he explained one of the biggest reasons he was grinning ear-to-ear while being carted off the field was he might've lost consciousness otherwise.
"He was laughing through the pain," Armstead said.