A woman who may enjoy being pregnant too much. A bumpaholic may feel compelled to procreate for many of the same reasons the substance abusers turn to booze or drugs.
"This is Jan's sixth pregnancy in five years; I'm beginning to think that she is a bumpaholic."
Someone who persists in believing that the American head of state from 2001 to 2009 was God's gift to the world, and won't be weaned off that belief by anything.