Carol Hathaway: On the twelfth day of Christmas, / my true love gave to me... uhhh...
[all the other ER docs enter and start singing]
Dr. Doug Ross: Twelve tone deaf doctors.
Dr. Mark Greene: Eleven lords a-lording.
Dr. Susan Lewis: Ten drummers drumming.
Dr. John Carter: Nine something something.
Nurse Lydia Wright: Eight maids a-milking.
Malik: Seven swans a-swatting.
Harper: Six geese a-gagging.
Everyone: Five golden rings. four calling birds, three French hens, two turtledoves, and a partridge in a pear tree.