Green’s Dictionary of Slang

a phr. meaning all day I dream about sex.

1996		Korn ‘Adidas’ 🎵 All day I dream about sex / All day I dream about fucking / All day I dream about sex / All day I dream about fucking.
2000		snopes2.com ‘Urban Legends’ 🌐 In the 1970s, 70 per cent of the U.S. athletic shoe market was held by Adidas [...] In such a climate, rumors about Adidas ran rampant. Most popular was the grinningly-shared tidbit that the appellation stood for ‘All Day I Dream About Sex.’.