Final answer:
Pentobarbital, also known as Nembutal, is a barbiturate drug with various street names.
Step-by-step explanation:
Pentobarbital, also known as Nembutal, is a barbiturate drug used for its sedative and hypnotic effects.
Some street names for pentobarbital include 'Mexican Yellow', 'Yellow Jackets', and 'Yellow Submarine'.
It is important to note that the recreational use of pentobarbital is illegal and highly dangerous, as it can lead to serious health issues and even death.