When a person has to leave the house at an exact time, or has visitors coming over and they need to shit. They gamble that they'll have enough time to shit.

A pick me is a woman that is willing to do anything for male approval. She will embarrass or throw other women under the bus to achieve this goal. The unfortunate thing about a pick me is usually the men they are trying to seek approval from are of poor quality and treat women badly, leaving little real benefit for the pick me.