slave to the bean

refers to one who cannot exist in the absence of coffee. he or she is then "a slave to the bean"

Jill: I can't go anywhere until I have my morning coffee. No...I don't care how badly you're bleeding from the ears, Jack.

Jack: aaaaaaaaaarggh! i'm dying and you won't drive me to the hospital until you've had some coffee?!?! Jill, you're such a slave to the bean.

by Jeff Urban (seriously, that's my real name) April 11, 2005