"Why can't you trust tacos?"/"They…

To “spill the beans” means to reveal a secret. A riddle is:

Q: Why can’t you trust a taco?
A: It might spill the beans.

“Q: Why can’t you trust tacos? A: They tend to spill the beans. #dailyjoke” was posted on Twitter by Joan Yazze Gallegos on September 3, 2017. “Why cant you trust a taco? Because it always spills the beans” was posted on Twitter by Ruby Estrada on October 4, 2017.

“Why can’t you trust burritos to keep a secret?”/“They tend to spill the beans” is a similar riddle about a burrito.

Wikipedia: Taco
A taco (US: /ˈtɑːkoʊ/, UK: /ˈtækoʊ/, Spanish: [ˈtako]) is a traditional Mexican dish consisting of a small hand-sized corn or wheat tortilla topped with a filling. The tortilla is then folded around the filling and eaten by hand. A taco can be made with a variety of fillings, including beef, pork, chicken, seafood, vegetables, and cheese, allowing great versatility and variety. They are often garnished with various condiments, such as salsa, guacamole, or sour cream, and vegetables, such as lettuce, onion, tomatoes, and chiles. Tacos are a common form of antojitos, or Mexican street food, which have spread around the world.

Twitter
Joan Yazze Gallegos
@JoanMarie87
Q: Why can’t you trust tacos?
A: They tend to spill the beans. #dailyjoke
11:23 AM · Sep 3, 2017·Facebook

Twitter
Ruby Estrada
@Rubiesareforeva
Its #NationalTacoDay - Why cant you trust a taco? Because it always spills the beans 😂 much funnier in my head
12:44 PM · Oct 4, 2017·Twitter Web Client

Twitter
Switchboard PR
@Switchboard_PR
Why can’t you trust tacos? They tend to spill the beans. #tacoday
4:00 PM · Oct 4, 2017·Buffer

Twitter
Rob MailingGuy
@ThatMailingGuy
Replying to @WorldofWarships
Never EVER trust a Taco! They ALWAYS Spill the beans! #NationalTacoDay
4:13 PM · Oct 4, 2017·Twitter Web Client

Twitter
Smiths of Loughton
@smithsloughton
Replying to @EatingBeagles and @WeWantPlates
Why can’t you trust tacos ?
They tend to spill the beans.
7:16 AM · Nov 10, 2017·Twitter Web Client

Facebook
Belgard Kitchen
July 2, 2019 ·
Why can’t you trust a taco?
It might spill the beans. 🌮

Twitter
New Peoples Bank
@NewPeoplesBank
Happy National Taco Day!
But, why can’t you trust a taco?
.
.
In case it spills the beans.
9:30 AM · Oct 4, 2019·Buffer

Twitter
LancheByU
@ByLanche
Why can’t you trust tacos?
They tend to spill the beans!
#JOTD
11:07 AM · Jan 6, 2020·Thryv

Reddit—Dadjokes
Posted by u/BumbleBeeHappyT January 14, 2020
Why can’t you trust tacos? 🌮
Because they keep spilling the beans!! 😂

“Why can’t you trust tacos?”/“They tend to spill the beans.”