A defensive set for Ultimate Frisbee. Sometimes known as a "1-3-3" or "Puke." The defense consists of one man (the 'Monster" or "Puke") who chases the disc and sets the mark on each thrower. The mark is straight-up - the huck must be avoided at all costs. Behind him is a wall of three men, who stay about 10 yards upfield from the disc and move from side to side to stop anyone from cutting in towards the handlers. Behind the wall is a deep deep, a left wing, and a right wing, who split up the backfield and ideally prevent the hammer. This can be a really effective defense against an even slightly-disorganized offense, because it takes a lot of teamwork to get anything upfield past the wall. The only drawback is that your monster must be really on top of his game, really fast, and in great shape - he's called a monster for a reason - and you must be prepared to take him out after a few points so he can go puke. This is a damn tiring defense.