Something that is so freaking fly and fresh. If someone's singing sounds like Jesus and Fergy mixed together, their voice is Guac. When you want to describe something as the most amazing, on fleek, dope ass, gucci thing ever just use the word instead of trying to explain how flipping legendary the said thing is. In other words Guac is the new "dope" for you older users.
Person one: "Damn! That is the most delicious, gucci, awesome, beautiful, amazing, exhilarating, dope ass, on fleek steak I have ever tasted! It was a legendary slab of heaven! I had an out of body extra terrestrial experience just from eating it! Wow!"
Person 2: "So you mean it was Guac?"
Person 1: "Guac af man. Guac af."
Person 2: "So you mean it was Guac?"
Person 1: "Guac af man. Guac af."
by gabedown March 12, 2015
Get the Guacmug. Something that is over the top, excessive, dramatic, ridiculous, or unnecessary; extra
When you ask for guac(amole) on your burrito at Chipotle, the server always says "Guac is extra, is that okay?" Thus, when someone is being extra, they are being guac.
When you ask for guac(amole) on your burrito at Chipotle, the server always says "Guac is extra, is that okay?" Thus, when someone is being extra, they are being guac.
Jake: "Did you see Katie's outfit today? She's wearing 3 necklaces and 8 inch heels. She is so guac!"
by mvp @ vt September 18, 2016
Get the guacmug. With every additional accessory, add-on and luxury money can buy. The most expensive and supplemented version of something.
Yeah it's a cheap car, but I got it with guac. Seat warmers, surround sound with auxiliary support, sunroof, the works.
Man, the iPhone 6 is just the iPhone 5 with guac.
Man, the iPhone 6 is just the iPhone 5 with guac.
by Stankloid June 19, 2015
Get the with guacmug. 
Teacher: Write a 1-page paper on WWI.
Student 1: *hands in 7438921432196 pages*
Student 2: Why you gotta be so guac?
Student 1: *hands in 7438921432196 pages*
Student 2: Why you gotta be so guac?
by Latoang June 2, 2017
Get the Guacmug.