Which three-letter word names both an eye irritation and a pigpen?

What do you call an extra advertising section placed loosely inside a newspaper? What is an extra fee charged for a special service called? Ken Kesey's band of counterculture followers who toured the U.S. in a bus called "Further" were known as the ___ Pranks… The Exxon tanker that ran aground on Bligh Reef in March 1989 was named for which Alaskan port? Which royal heir, the son of actress Grace Kelly, was born on March 14, 1958, in Monaco? An ibex is a goat; what is an ibis? An ice cave at over 10,000 feet near Gangotri in the Himalayas is the source of which sacred Indian river? The 1999 film "An Ideal Husband" was adapted from an 1895 comedy by which author?