Laundry can and is often used as a code name for sex, for discussion around people in public, or for people who are uncomfortable with the term "having sex" or "intercourse."
A woman says to her husband "Can we do the laundry?" The man says to his wife, "I already didthe laundry, it was a small load, so I did it by hand."
Unless you're talking about laundry, nothing is getting separated by color here. Take your racist ideologies out of here, and don't even think about coming back.
Laundry, plainly put is clothes that you have to wash and never do. It is very important that you do your laundry (yes, literally...not the option that's against the law or involves being a prostitute, whore or slut). Mothers usually do laundry and fathers have strange ways of doing laundry like letting your clothes "soak" in the tub. You probably want to do your laundry now. The choice is yours.
I wanted to look nice, not have repulsive body odor and have a chance at being accepted by society. So I did Laundry with All, Tide of A&P soap.