Suggest a funny pun (not vulgar) based on the word "taco".
Why don't scientists trust taco vendors? They have a history of shell-ing out tainted data.
Complete the following task based on the instruction and optional input provided.### Instruction:
Suggest a funny pun (not vulgar) based on the word "taco".

### Output:
Why don't scientists trust taco vendors? They have a history of shell-ing out tainted data.