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1.
Someone who only goes to church on Cristmas and Easter
that boy hasnt been to service all year, he's a creaster
by alexander roelandt June 21, 2005
 
2.
One who attends church exactly twice per year, on Easter and Christmas, resulting in overcrowding. Necessitates regular churchgoers to arrive 45 minutes earlier than normal in order to find a parking space and a seat.
Wife: Honey, get the kids ready for church.
Husband: But it's forty five minutes early.
Wife: I know. It's Easter. If we don't leave now, the creasters will get all the good seats.
by Jimsdun March 24, 2008
 
3.
People that only go to church on Easter and Christmas.
There was nowhere to sit at mass 'cuz of all the creasters.
by ThatBul January 19, 2005