Joined: Jan 2009
Posts: 44,171
Likes: 6,390
From: New York, NY, and High Falls, NY, USA
Bikes: 1962 Rudge Sports, 1971 Raleigh Super Course, 1971 Raleigh Pro Track, 1974 Raleigh International, 1975 Viscount Fixie, 1982 McLean, 1996 Lemond (Ti), 2002 Burley Zydeco tandem
But seriously consider not taking it out unless you're going to put a new one in. And if you do decide to take it out, heed the above advice and know that it is probably reverse-threaded.
One way that sometimes works for me is to clamp the cup in a bench vise and use the frame as the lever.