Tater Juice. =)
"Ginga: Nagareboshi Gin" character list - see related link below .
Shaithan, pishaj
There aren't slang terms for people's names.
Speed IS a slang name. It means amphetamines. Click the related question to find more slang.
Some common slang names for acid are LSD, Lucy, tabs, and doses.
Saying names in the back slang requires no strict rules.
Local names for gin vary widely across different regions and cultures. For instance, in Spain, gin is often referred to as "ginebra," while in Italy, it may be called "gin" but is also associated with "ginepro," referencing the juniper berry. In some regions of the UK, terms like "sloe gin" refer to a specific type of gin flavored with sloe berries. Additionally, in some Caribbean countries, gin may be colloquially referred to as "gin and tonic" when served in that popular mixed drink form.
"magic"
Poppers
There is alot of slang/street names for Hallucinogens like power powder, magic dust, and many more
Slang names for a lawyer include hired gun, ambulance chaser, and shyster.
It's not really slang, but that muscle is commonly called the calf of the leg.