telling lies to get laid

A stupid person; it refers to the lack of surface area on an individual's brain. The general thought is that the more surface area (wrinkles, creases, etc.) a brain has, the smarter the person is. Conversely, a person with a smooth brain (no wrinkles) has less surface area and would therefore be stupid.

The correct term for someone who does cosplay. Or at the very least, it means that the person cosplays well.

This usually means that they take part in cosplay groups, do skits to go with their costumes, sew their own costumes, and maybe write a doujinshi on the side. Their costumes generally look better than most cosplayers because they spend more time and more money laying out a pattern and taking the time to do it right.

Another word for vagina.

Betting term;
A Layer is any individual who offers odds and accepts wagers on the outcome of an event. Lays bets for backers to back

if one has layers it means that person has a dirty mind. You can have more layers than somebody...meaning you have a dirtier mind or in some cases are more pervvy.