Forced Nonchalance

"Christ's sake Clint, outa my way!" Zeke screeched, his voice thin and strained.
"Oh shutup Zeke," Clint replied casually, like they were friends joking together.
Clint saw the dumbfounded look on everyone's face. Cole guessed that maybe Clint had either lost his mind and suddenly become stupid or he had suddenly become stupid and was playing a dangerous game.
Clint, though, refused to move. Apart from his left hand as he rejigged his grip so that his thumb held ready on one side of a glass.
His idea was fully formed.
And he felt like he was going to puke.