Michael Phelps qualified for the 200m butterfly finals on Monday night. Before his preliminary heat, Phelps was seated behind South African swimmer Chad Le Clos with his earbuds in, getting in the zone. Phelps probably wasn't intentionally staring down Le Clos, but Le Clos was standing right in front of him, and it looked that way on TV.
The photoshoppers and jokesters on Twitter had a lot of fun with this one. Click through the slideshow to see some of their hilarious reactions to this unforgettable Olympics moment.