swinfluenza 

The "swine flu", an outbreak that is responsible for many deaths in Mexico during the outbreak of March and April 2009. The same Influenza A virus subtype H1N1 was also responsible for the Spanish flu pandemic that killed millions.

The pigs don't like it much, either.

Did you hear about Mexico City? It's all shut down because of swinfluenza!

swinfluenza by Wilted April 27, 2009

Sinfluenza 

The debilitating condition suffered for approximately 1 to 3 business days after a wild weekend in Las Vegas, New York City, or another recognized center of partying and nightlife.

I called in sick to work because I spent the weekend in Vegas and I came down with a case of Sinfluenza.

Sinfluenza by thejdog2007 May 14, 2009

Winfluenza 

The sudden spout of laziness and restlessness you experience before winter break. Causes a change in demeanor and some sort of decline in academic performance. Similar to Senioritis but happens more around the Holiday seasons due to breaks.

Person 1: Did you finish your biology homework?
Person 2: Nah, I don't want to do it. This is the week before break anyway.
Person 1: Yeah, you're right.

Person 1: Dude, we have to write that essay before break.
Person 2: I'll do it later. I've got a case of Winfluenza right now.

Winfluenza by TiredHuman December 12, 2017

Shinfluenza 

When your co-worker named Shin, comes to work coughing and spluttering wearing a face mask, and infecting his 100+ work mates.

Oh gee, you sound terrible, sounds like you are coming down with a bout of Shinfluenza.

Shinfluenza by iAndyP August 7, 2018

sehnfluenza 

a highly contagious strand of influenza that affects the whole dorm but the person who spreads it felt nothing

mike had sehnfluenza, and almost died.

sehnfluenza by tom bernansky May 6, 2007