E-lay is short for a Cadillac Escalade. It's commonly used in the Detroit area.
Chris: Yo I'm bout to put some 6's on the E-lay
Me: They better be Forgies or better
A person who offers him-/herself for casual sex through an internet site, usually in exchange for an evening out or similar social event.
"She wasn't, like, 'with him' with him at the bar. He was just a one-time e-Lay that she got over the 'net."