The embarrassing moment came a few minutes after Drake captured the 200 individual medley by a scant 5-hundredths of a second in an exhausting race.
She left the pool deck and spilled her guts, to put it as delicately as possible.
"I was dehydrated after my 200 IM," Drake explained. "I didn't feel good. I had a headache and I kind of threw up a little bit. It was stressful."
Fortunately, Drake managed to leave the pool deck before the unfortunate episode.
"It wasn't in the pool," she said with a relieved smile. "Thank God."