The dirty disease, the silent disease, "the clam" and "the gooey stuff."
Chlamydial Infection, Chlamydia trachomatis, Chlamydia vaginitis. All I have heard of is these: clam ,and gooey stuff. Chlamydia is known as the silent disease.
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.
"magic"
Tater Juice. =)
Poppers
There is alot of slang/street names for Hallucinogens like power powder, magic dust, and many more
Nitrofurantoin does not cure chlamydia. You should see a doctor and have a treatment. Typical treatments for chlamydia include doxycycline, azithromycin or herbal medicine called Diuretic and Anti-inflammatory Pill.
It's not really slang, but that muscle is commonly called the calf of the leg.
Slang names for a lawyer include hired gun, ambulance chaser, and shyster.