When your fecal matter contains more than 2 colors; Usually caused after consuming large amounts of Hispanicfood, corn, or multi-colored popsicles.
Guy 1: Dude....I shouldn't have eaten that many 5 layer burritos..
Guy 2: Yea man, you'll probably be having a toilet fiesta in 15 minutes
Guy 1: -Proceeds to run to the nearest bathroom and destroys the toilet-
A furry rainbow bear with it's significant purple ears. These Fiesta bears are known for their interest in all things cookies. Fiesta bears are also notorious for their habits of stealing another person's cookies.
A term that has become ubiquitous among young adults to indicate a rapid succession of blow jobs. I.e. mentioning you have lockjaw from giving hundreds of blows jobs means that you probably attended a throat-fuck fiesta
A: "There's got to be a term for why I have, like, SUCH BAD lockjaw right now"
B: "Like that blowjob gangbang you attended last night?"
A: "Well, I don't want to sound too casual about it..."
B: "A throat-fuck fiesta?!"
A: "...."
B: "What, you don't like parties?"