straight chaser
A gay that tries to hook up with straight dudes.
You see Victor over there? He wants to hook up with Josh even though Josh is't a faggot. What a straight chaser.
straight no chaser
Literally meaning an alcoholic beverage without any added drink mixer, it's also used for anything presented purely without frills.
1. "I swear to you. He took fifteen shots of rum. Straight no chaser."
2. "I bought it online without a contract, straight no chaser."
2. "I bought it online without a contract, straight no chaser."