A tremolo bar. You screw it into your guitar and when you're playing you push and pull it to stretch or loosen the strings, heightening or lowering the pitch.

A polite term for shoving a lubricated probe into the Earth's hole to release gas.

The "whammy bar" goes by many other names as well: wham bar, wang bar, vibrato tailpiece, tremolo arm, Floyd, etc. (Although "Floyd" properly refers only to the "Locking Tremolo System" designed by Floyd Rose). The names come from manufacturers or from users.

Although some refer to this device as a "tremolo bar" or a "tremolo arm", the use of the word "tremolo" is misplaced. Tremolo refers to volume modulation. The term was originally used for instruments of the violin family. If a violinist's (or violist's or cellist's or bassist's) score is marked "tremolo", it means the player will rapidly move the bow back and forth across the string, resulting in a "trembling" sound.

"Vibrato", by contrast, is pitch modulation. Returning to the violin family: watch a violinist's left hand wiggle quickly while holding down a string. By moving her hand this way, the violinist is constantly and subtlely changing the pitch of the string. This makes the sound of the string very "wide" and "alive" -- more "vibrant."

The wham bar on the guitar changes the pitch of the gutar's strings. Therefore, it's properly referred to as a "vibrato" device, not a "tremolo" device.

when a girl gives you a blowjob while you are playing guitar hero

A homosexual act that involves two men. During anal sex, the giver holds the receiver like a guitar, then jacks him off in that position.

The coolest bar in North America and possibly the world!!!!

When you tap the clit as fast as you can.