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Many desperate YouTubers with fewer than a thousand subscribers on their channel will subscribe to any channel just to gain an extra subscriber in exchange. This is regardless of how terrible the videos are. Unfortunately, some YouTubers who do have great talent, creativity, and wonderful video quality sink to the bottom of the Mariana Trench as hundreds of boring videos surface the Pacific islands.
Sub 4 Sub? I can't wait to see the latest crap!
Sub 4 Sub by Gio Bandito February 25, 2015
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or "sub4sub" / "sub for sub"

Abbreviation for "Subscription for Subscription" on video-featured websites such as "Youtube.com".

Sub 4 Sub is a request to subscribe to your profile with a guarantee to subscribe to the subscriber's profile.

Essential for nerds with small self-confidence.
sub 4 sub any1 ? please rate ma new video!!!1
sub 4 sub by Lex Hundt May 14, 2008

Tier 4 sub 

someone that would give their soul to a streamer thats a 3/100 on a good day for the smallest, measly thank you.
Tim: Did you hear about Kane? He died.

Rashad: Nigga gave his soul to some ugly ass streamer.

Tim: Lmao he's a tier 4 sub.

Tier 4 sub 

Does not exist.
Random_user_A: hey man you're making some great content, I'd love to go above and beyond and sub to you at tier 4, but don't have enough money yet :(
Random_user_B: Tier 4 sub? The highest is tier 3
Random_user_A: yeah thats what I meant
Random_user_B: I mean it's up to you if you're feeling it, just note that tier 3 has little to no perks
...
Streamer: *reads chat* "Oh thank you Random_user_A! But you really don't have to if you can't"

Tier 4 sub 

someone that would give their soul to a streamer thats a 3/100 on a good day for the smallest, measly thank you.
Tim: Did you hear about Kane? He died.

Rashad: Nigga gave his soul to some ugly ass streamer.

Tim: Lmao he's a tier 4 sub.
sub4sub is a term used on the Video Sharing Website "YouTube"
to say "sub4sub" to another user means that if that user will sub (subscribe) to your videos, you will sub back to theirs, It may sometimes be posted as a comment on any random video to be pointed towards any user that's stupid enough to get sucked into it, Many sub4sub's are ignored, or marked as spam
"Hey YouTube users! sub4sub?!!?"
"Dude, GTFO, no one wants to sub you, your videos suck anyways"
sub4sub by X172 April 11, 2009
A popular phrase used on YouTube. When you ask someone for a sub4sub, you subscribe them, and they subscribe you, in result, both youtubers gain a subscription. Unfortunately, a large amount of youtubers that do this are kids who have awful videos or (god forbid) no videos. Those who have awful videos just want attention. Those who have no videos look like complete idiots each time someone sub4subs them, looking more and more like a chode. They have yet to realize this. It is rare when a person with good videos asks for a sub4sub, because they usually do not need it. These Sub4Sub whores are usually found on Fred's channel.
StupidKid1: Hey dude wanna sub4sub?!
RegularUser2: No, your videos are horrible, and I don't need to sink to your level to gain subscriptions.

StupidKid2: SUUUUB4444SUUUUBBB?!
RegularUser2: You have no videos. Why would I subscribe to someone who doesn't have any videos? You are a failure.
sub4sub by The Motherphucker June 22, 2010
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