Wonder Day 

Cringe term mainly used in cold countries that sometimes have warm days. This is commonly used by the cringe and rat people that typically get bullied in school.

Today is a wonder day (5 degrees higher than usuall)

Wonder Day by _anonymous23232 May 30, 2021

90 day wonder 

Military officer whose source of commission is the 90-day OCS program. Characterized by feeling inferior to service academy grads. And rightly so.

I told that 90-day wonder that my socks have more time in service than he does.

90 day wonder by Salty Sam 02 August 20, 2003

90 day wonder 

a newly commissioned graduate of OCS or DCP

Not another 90 day wonder.

90 day wonder by The Return of Light Joker December 31, 2009

Wonderdad 

Bland ass, milquetoast, self-nominated father of the year whose indoor-kids think he's Superman because he lets them skip acapella practice on family board game night.

You changed a diaper? Congratulations, wonderdad. Tell your wife I said, "what's up."

Wonderdad by TurboSexaphonic October 11, 2018

No Pants Wonderday 

The day that most call Thursday...

"Dude, I can't wait for No Pants Wonderday!"

No Pants Wonderday by charlierocksursocks September 22, 2006