13th month 

Januember, the 13th month of the year, was created by philosopher Elon Musk in the year of 2069, on April 20th. The month was created to make the year 2069 one month longer, so people would be able to enjoy it longer. The month is only put in action in 2069 though.

"Hey, its 2069!"
"I'm so excited for the first and last ever 13th month!"

13th month by Nathan's Username October 18, 2019

13th month 

a one-month bonus paid to employees at the end of the financial year.

All civil servants will receive a 13th month annual wage supplement at the end of the year.

13th month by happyisjo January 3, 2016

13th month pay 

-Section 1. All employers are hereby required to pay all their employees receiving a basic salary of not more than P1,000 a month, regardless of the nature of their employment, a 13th-month pay not later than December 24 of every year.

-Sec. 2. Employers already paying their employees a 13th-month pay or its equivalent are not covered by this Decree.

-Sec. 3. This Decree shall take effect immediately.

Done in the City of Manila, this 16th day of December 1975.

agent: Hey! did you already get youre 13th month pay??

agent2: hell fucking i didn't! im broke as hell this coming holiday... damn those fucking asshole Boss! screw them!

13th month pay by REPS(name) December 14, 2009