Internal 

The feeling you get when your principal (or anyone for that matter) tries to be funny and fails miserably and you are a witness.

Similar to Second Hand Embarrassment.

The most uncomfortable feeling ever, it can only be described as "Internal".

Carly: Seeing JohnDoe dance in front of the whole school was the most uncomfortable thing of my life.

Shannon: No, it was just internal to the extreme, I almost couldn't breathe it was so bad.

Internal by xsarahhx12 January 15, 2011

internal 

On the inside.

Internal bleeding ?

internal by larstait October 11, 2003

Internal briefcase 

The type of turd which is so vast and substantial that relieving yourself of it is comparable to putting down a heavy briefcase you have been carrying all day.

Person 1: 'Hey are you ok? Whilst you were upstairs I heard a colossal thump.'

Person 2: 'Don't worry, I just dropped my internal briefcase.'

Internal briefcase by freshpot September 9, 2011

internal friction 

It's basically like sexual frustration or external friction, except it's in your head. (:

'Man, after last night with Louis, I got some internal friction."

internal friction by larrystylin28 December 21, 2017

internal fart 

A fart that is denied acces into the world so in retaliation it runs back into your colon screaming,"I hate you!"
We know this diolouge as the sound of an internal fart.

As a fart tried to slip past my anus I refused to let it fly. It then turned into an internal fart.

internal fart by Fart Connoisseur November 19, 2013

internal screaming 

When someone seems to be content and has a normal expression, but in reality they are silently screaming for reasons like boredom, anger, fear, etc.

1. Doing internal screaming can happen when you see something extremely cringeworthy
2. The lesson was so fucking boring that i had to internally scream

internal screaming by BurritoAmigoTacoTortilla May 4, 2016

internal assessment 

The internal assessment, also known more commonly as the IA is a part of the International Baccalaureate Diploma Program. Taking the form of an extremely long essay, or in depth lab, the internal assessments need to be done for each of the students 7 core subjects.

IB Student 1: Dude the Biology internal assessment is due tomorrow I haven't even started....
IB Student 2: I have to write both my Biology IA and History IA by next month. Kill me now

IB Student 1: I think this is a good time for us to drop out of IB.

IB Student 2: Agreed. These internal assessments are so pointless

internal assessment by imsocoolomg March 14, 2016