The Serious Card 

The much hated serious subject raised by someone following a funny conversation, usually about a similar or related subject.

John: And then I spent an hour in the waiting room with bandage around my head and a golf club in my hand!
Laughter
Sally: Man, that's funny John. But don't you think it's the current political corruption that's causing these increased hospital waiting times?
John: Did you really just pull the serious card?

The Serious Card by Sleepy Sasquatch September 8, 2011

The Serious Christian

One of the most underrated YouTubers ever! He uploads videos that are intended to make others happier and more positive. The Serious Christian is awesome!

Guy: "Are you subscribed to The Serious Christian?"

Friend of Guy: "Yeah, man! His videos are great!"

The Serious Christian by The_Intellectual_Individual October 19, 2018

On the serious 

A phrase used to declare the serious nature of the statement that the phrase preceeds.

1: I have aids.
2: HAHA! That's funny man!
1: No, on the serious, I have aids.
2: Oh. I hear the only cure is death. On the serious of course.

On the serious by SaintZi January 23, 2011

In the box serious 

Expresses how important or serious a matter is. It is used to show a higher level of importance than a saying such as "dead ass" or "dead serious."

I'm not playing, I will come for you. I'm in the box serious.

In the box serious by Janet&Cassida December 20, 2017

THE INTERNET = SERIOUS BUSINESS

An extremely popular Internet catch phrase. Not necessarily typed in all caps. Sometimes shortened by omitting "THE." Also sometimes used with an intentional mispelling of "THE" as "TEH."

Many people think that having heated debates over the Internet is a pointless waste of time, no matter what the topic of discussion might be. Thus, this catch phrase was born. At times, the phrase makes a valid point. However, there are many people who overuse the phrase, thereby degrading it's merit and humor.

Person 1: I'm right and you're wrong!

Person 2: No, I'm right and YOU'RE wrong!

Person 3: THE INTERNET = SERIOUS BUSINESS

THE INTERNET = SERIOUS BUSINESS by forcryingoutloud August 17, 2006

Serious'd The Fuck Up

When one's complexion or demeanor shifts from lighthearted to straightforward. Describes when seriousness was quickly obtained.

At first, I was like ^.^

But then I serious'd the fuck up.

Serious'd The Fuck Up by Lymür Awsumsaws January 11, 2009

The Why so serious 

You masterbate and then ejaculate on your hand then smear your cum across her face and say "let's put a smile on your face"

After finishing yourself off I gave her the why so serious.

The Why so serious by TAbresco October 30, 2014