I should 

Most popular phrase from January 1 to January 31. Usually followed up by a
'probably ' and then a ridiculous or an unrealistic goal.

I should probably (work out more, stop smoking, eat healthier, stop spending so much money, help the needy, get a job, build a rocket, become an astronaut) this year

I should by Shmedricko January 8, 2009

i should call her/him 

When you are reminded of a person by inanimate objects in a sexual way.

*squirting lotion on hand* i should call her/him or *mixing mac n cheese* i should call her/him

i should call her/him by lolpp37 June 13, 2020

I should be studying

You're so distracted/bored while studying or doing homework that you search up random things.

Go back to studying!

I should be studying right now but I'm going to search it up random things. ¯\_(ツ)_/¯

I should be studying by B00tyk1lla69 March 28, 2019

i should be doing homework 

What you're thinking. Usually thought with said homework in a pile next to a big distraction, most likely a computer.

I should be doing homework but instead I'm on the urban dictionary reading a riveting definition.

i should be doing homework by 2112iskewl November 14, 2015

I should dip my balls in sulfuric acid 

when you get the strong urge to perform the inexplicable act of dipping your balls in sulfuric acid.

I should dip my balls in sulfuric acid

I should not have dipped my balls in sulfuric acid, I will be dipping it hydrochloric acid next time.

I should dip my balls in sulfuric acid by 98ik8 March 15, 2022

I should be doing homework 

Hello! You're most likely procrastinating right now. I can imagine that big pile of homework sitting next to you that is all due tomorrow. I would tell you to stop browsing urban dictionary but I know you won't listen. Good luck, you'll need a lot of it.

P.S. Faking sick can sometimes be a good excuse and can give you an extra day to complete that homework that I know you probably wont do today.

I should be doing homework.

I should be doing homework by Kittykat10001 February 21, 2019

I should go. 

A rude and terse way to end a conversation you no longer wish to be a part of.

Jacob: But the prize...
Shepard: I should go.

I should go. by Tells-Many-Truths June 1, 2016