PJA is an acronym which stands for 'Plum Juicy Ass' meant to be said as a compliment when referring to someone's buttock. It is the gender neutral predecessor to WAP as WAP can only be used to describe those who have the luxury of having a vagina. A PJA can be obtained by conducting posterior orientated exercises such as the squat.

"From the top,

Pop some squats

That's a PJA!"
Thicc boy 1 (Sam): Damn! Mark is rocking in with a gucci PJA!
Thicc boy 2 (Mark): Thanks man! I just popped some squats this morning! Becky gave me the workout of a lifetime! Her PJA is MASSIVE!

Thicc boy 1 (Sam): Yea I saw her Instagram post! That PJA should be in the next Jurassic Park!
by PJA inventor June 5, 2021
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PJAS stands for Pennsylvania Junior Academy of Science.
It is an annual science project competition open to 7-12 graders held in two levels.
There is regional level. It is held in late February. That is your participating county and relatively surrounding area.* If you get a first place in that level,** you move onto state level and attend Penn State University for 2 1/2 days, presenting your project to a tougher panel of judges.
*Region 9's competition is held at Slippery Rock University Main Campus.
**The grading scale for 1st, 2nd, and 3rd places are as follow: 1st place- 4.00 pts-5.00 pts. 2nd place- 3.00 pts- 3.99 pts. 3rd place- 2.99 and lower.

~I have attended PJAS since 7th grade
by raiderj134 November 9, 2011
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Some critical moments can't be discussed with anyone but still PJA
by simply sunny April 4, 2015
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