Google It
From Free Knowledge Base- The DUCK Project: information for everyone
Something that assholes say when asked a question and they don't know the answer. Also, a shameless promotion of one of many Internet search engines. It is slang for "search for the answer on the Internet rather than asking me."
Google is your friend - another misguided response from someone too stupid to answer your question. Google is _not_ your friend. Google is a big monolithic soulless corporation that would buy, sell, squash, and eliminate you if there were profit in it.
Don't be an asshole. If you don't have an answer, just say "I don't know." It is axiomatic that one can do an Internet search for the answer to a question.