An Eephus pitch, in baseball, is considered a "junk" pitch with very low speed. The delivery from the pitcher has very low velocity and usually catches the hitter off-guard. It was invented by Rip Sewell of the Pittsburgh Pirates in the 1930s. And it was named by outfielder Maurice Van Robays. When asked what it meant, van Robays replied “Eephus ain’t nothin’.” But when Sewell asked why he named it that he said "Eephus means nothin' and so does the pitch"
The eephus fooled the batter with 2 strikes and he swung foolishly at it.