The act of throwing a ball to the back of a swimming pool while your blood alcohol content is above 0.4%. While throwing the ball you must be constantly yelling “BACK WALL!”
A pun of parallelism, a backallelism is a witty response or retort, often sexual, that contains parallel structure but a dramatic shift in idea or topic.
Pajama casual is a term used when working from home and preparing for a video conference. All business above the waist and your pajama pants down below.