Mouthpiece

[Sarah]

The part of a musical or other instrument to which the
mouth is applied in using it; as, the mouthpiece of a bugle, or of a
tobacco pipe.

[Rihanna]

Anyone who has [alot] of [game]. Can make them do things they [normally] wouldnt do.

[Jessica]

Similar to a [horseshoe], its when a lip is packed [cheek to cheek] with a [bomber] of chew.

[Little_Girl]

To speak in a convincing and [persuading] manner, usually to make a person do something they wouldnt normally do. A person who is or has a mouthpiece is usually attributed to as [a playa] or a [lawyer].

[Jason Yan]

a [lawyer]

2, a [spokesperson], a [spokesman] or woman

[Tariq Zaki]

[gaming] up [a bitch]

[Julene]

Dated [criminal] slang for a [lawyer], especially a criminal [defense] lawyer

[Kai]

Synonym to [blow job] for a [high ranking official], a [cabinet] member or a president who has to lie to keep his job.

[Justin Bieber]

An [exceptional] mouth on a girl designed to perform [felatio] at [higher] than average quality

[Britney]

A thing designed to be put in or against the mouth.