dated No way; there's no chance; you must be joking; I think not. From rhyming slang of the sarcastic phrase "I should say so," meaning the same. Primarily heard in UK. Bob: "So, are you going to finally join us for some karaoke?" Janet: "I should cocoa!"

Typically said of an apartment building that has become a cooperative (or "co-op")—a building in which residents do not own property but rather own shares in the corporation that owns the building. I can't believe that our building is going co-op—I might need to move.

To convince one to take a certain action or position. I think he was beginning to see the benefits of our plan, but we'll never co-opt him into it now that you've insulted him!

Of a set of parents who were previously married or in a relationship with each other, to jointly raise their child(ren). My ex-boyfriend and I co-parent, so the kids will be with him this weekend. John co-parents with his ex-wife.

Of a set of parents who were previously married or in a relationship with each other, the act of jointly raising their child(ren). I know co-parenting isn't always easy, but at least the kids get to spend time with both of you.

To wash one's hair using only conditioner (rather than shampoo and conditioner). "Co" is short for "conditioner." Ladies with thick, curly hair have taken to co-washing their tresses, to avoid stripping their hair of natural oils.

Of a parent, to sleep in the same bed or room as one or more of their small or infant children. We're going to try cosleeping once the baby is born.