May 2, 2026 / 2:12 PM EDT / CBS News Add CBS News on Google When former New York Giants' placekicker Younghoe Koo completely missed the ball on a field goal attempt against the New England Patriots last December, the broadcasters weren't the only ones laughing. Mark Toothaker, a stallion sales manager for Spendthrift Farm in Lexington, Kentucky, was on the couch cracking up with his wife, Malory, about the whiffed field goal and consequential turnover.  Then, he felt something strange. "I felt a shock in my left arm, and then I never felt anything else. Had no pain, anything after that," Toothaker said. He didn't wake up for 25 minutes and was told at the hospital that he suffered a seizure.  Doctors also revealed the shocking news that he had a brain tumor the size of a tennis ball. Luckily, his wife Malory is a nurse. "Just happened at absolutely the right place if it had to happen," Toothaker said.…