“Not” is a 90s slang term. It was a quick-witted retort, often stated after a sarcastic or absurd remark.
“Phat” is early 90s slang, it’s an alternative way of saying something is “nice” or “cool”.
Sup is an abbreviated version of “what’s up?”. It’s a greeting that was used in the 90s.
The dancing baby is short animation of a baby dancing. It is considered one of the first internet memes.
Trippin is a 90s slang term meaning upset, or someone behaving in negative manner.
Starter Jackets are a line of sports team branded jackets created by Starter. The jackets were worn by popular athletes and entertainers during the 80s and early 90s and became extremely popular.
“Tight” is late 90s slang, it’s another way of saying “cool”.
“All that and a bag of chips” is 90s slang describing something that is upmost beautiful or eye catching. It’s a superlative form of all that.
“Alrighty Then” is a 90s slang term. It is a sarcastic response to something strange.