Kale Bwangu
A phrase used to describe something that is very old or "old school." It's often used humorously to tease someone for wearing outdated clothes or having an old phone.
Look at that old phone. That's so kale bwangu!
Butterfly Effect
The feeling of tiredness and or laziness that a person feels when they are slowly sobering up from smoking weed or eating edibles.
I began to go through Butterfly effect after smoking a joint