Inside voice 

The polite way to tell people to shut the fuck up. Always insinuated, but never followed.

Now class, remember to use your inside voices while visiting to the museum.

But Miss Teacher...

For fuck's sake, I said 'inside voices', Tommy.

Inside voice by RadioactivePuppy April 4, 2011

inside voice 

when you say something you're thinking that you shouldn't have said out loud

Gee, that guy's really a jerk, did i say that out loud? Maybe i shouldn't use my inside voice.

inside voice by gcdude540 July 14, 2006

inside voice 

An inside voice is the voice you use when you're inside somebody.

"I just love your poon," said Tyler in his inside voice.

"Unggh, unggh!" said Barbara, pumping away furiously.

inside voice by scodder June 11, 2010

Inside Voice 

The voice a man uses when he's inside of a woman.

Aw yeah, baby, you know you wanna hear my inside voice.

Inside Voice by Necrosys March 11, 2015

Inside-Out Voice

Speaking while inhaling as aposed to exhaling; Talking while breathing in to avoid someone nearby smelling your breath.

So Im pretty sure that Billy ate dookie puffs for breakfast this moring, because he failed to use his inside-out voice when he asked me for a piece of gum.

Inside-Out Voice by Inhale-ilitosis July 19, 2009