Ethylphenidate, a drug very very closely related to the pharmaceutical
Ritalin (methylphenidate).
Amphetamine-like effects, but warmer and more MDMA-like.
Legal and available off the internet.
"We should totally
sniff some ki, guys."
"Do you
fancy a ki?"
"You should get on this ki, bro, it's like the
KEY to another you - see what I did there?"
("Ki" refers to an unspecified amount of powder or one tablet/capsule)