watch this 

Something said right before a person does something amazingly stupid.

Hey Peter, watch this!
*jumps off the roof with an umbrella and breaks both legs*

watch this by TheDumbGuy August 5, 2005

Watch This 

Famous last words.

Person 1: Hey watch this!
Person 2: *looks at person 1*
Person 1: *attempts to do a backflip and falls off of a building*

Watch This by VioletThePurple October 17, 2020

watch this 

Something said right before a person does something amazingly stupid.

In the military it takes a quantum leap. with high explosives, high performance aircraft and situations that will get you killed in a heartbeat.

along with "based on my experience" "I've made a decision" "trust me" and "watch this"

It reaches another level if the MFer is smiling, chuckling or laughting.

The most dangerous thing in the US Army is a warrant officer AH-64 Apache pilot chuckling and saying "watch this"

watch this by Alpino August 10, 2012

watch_this 

the last thing said by any guy before he ends up in the emergencey ward - or on a slab at the morgue.

Hey guys, watch this ...

watch_this by Bart_vu May 18, 2003

Watch this Space

Perhaps the most annoying phrase currently used by marketing teams and YouTube influencers to convey a sense of hype and anticipation about their bullshit products or services.

Made more depressing by the realisation that there are indeed people out there, watching that space.

Peppy YouTube influence - “let’s just jump right into it guys, I’m going to be releasing some brand new mystery merch so watch this space”

Watch this Space by Ribbertthefrog March 1, 2019

watch this space

a phrase commonly used by the king louis tomlinson

louis: might fuck around and start my own management company. watch this space

louies: sir we’d literally die for you

watch this space by king alfonzo March 10, 2021

watch this pop out

I’m about to start acting how y’all act🤣‼️‼️‼️

oh,thats what we doing now? Ight watch this pop out tho.

watch this pop out by t.speaksss™️ June 8, 2018