San Francisco 49ers quarterback
Kaepernicking, which became a meme, is when Colin Kaepernick kisses his bicep after he scores a touchdown on the field.
Kaepernick's photo caption on Instagram read:
"I got the opportunity to meet one of the greatest women in the world, the first lady @first_Obama and even got her #Kaepernicking"
And here's a photo of Kaepernick "#Kaepernicking" in his natural habitat:
CBS Sports