Janet woke up this morning as a blonde.
If Janet talks to Kathy, Janet's hair color changes to red if it
is blonde, and to blonde if it is red. It doesn't change if her
hair is brown.
If Janet talks to Larry, her hair color changes to brown if it is
blonde, and to red if it is brown. If it is red, it stays the same
color.
If Janet talks to Mary, her hair color changes to brown if it is
red, and to red if it is brown. If it is blonde, it stays the same
color.
At the end of the day, Janet's hair was blonde. Janet talked to
Person "X", then to Person "Y", and once again to Person "X".
Who are Person "X" and Person "Y"?
Yakkity Yak