SRB

Smiling Real Big. For many reasons but also because most people aren't actually laughing out loud (LOL) when they read a text or email.
We had a fun time with everyone at the bar last night, SRB.

Or anytime someone says a semi funny joke you can SRB instead of LOL.
by thewitt33 December 08, 2012
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SRB 🦤

slimy rat bastard with a side of dodo bird
haha thanks you SRB 🦤
by taylorod04 February 11, 2021
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Person 1: Do you know who Joe is?

Person 2: Stop this isn't even funny

Person 3: Who's Joe?

Person 2: you idiot

Person 1: Joe MAMA

People 2 and 3, along with every other living being on Earth: asjkbyhTUIYSngyidgnsuysvKBJBMSVNAB<DULIEKWLOSYD*&^AR&^%SRB*&INDMG&UMAKSJDJNASKNMDSAVYDGUSAYJYDIGYUASGDVNBSADYGSA^ID&YA&*S^EA$%#EFDYGHISANJNMKCNMIOONDOIASBFUYTEIGSYAFBDABSIOX
by AZ_AZ_AZ_AZ_AZ_AZ_AZ_AZ_AZ_AZ October 12, 2021
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srb

On tumblr this means "self reblog", when someone reblogs their own post. This is often but not always artists/writers/creatives trying to promote their work.
srb for the morning crew!
by rancidkitty August 10, 2024
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SRB

Sperm Retention Buildup.

When a guy hasn't busted a nut in so long it affects his thinking thus he makes dumb decisions.
Jim is acting crazy again, it must be SRB. He hasn't been laid in a while.
by RichnLifesGame May 18, 2018
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