“卡特曼家的圣诞节”这一集是第二季的第十六集，也是全系列的第29集，于1998年12月9日播出。
简介
四人来到卡特曼的奶奶家过节，而本应在狱中的另一个家庭成员霍华德和他的朋友曼森不期而至。到底他会成功逃亡还是又被抓走呢？另外，汉基先生出现在商场的消息让凯尔兴奋不已，但是最后他们发现这只是个骗局。
剧情
圣诞节到了，男孩们都被邀请去内布拉斯加州的卡特曼外婆家度假。不幸的是，斯坦的父母不允许他去。但斯坦偷偷溜走，和其他人一起去了。
经过很长的车程，卡特曼和他的妈妈唱着烦人的歌曲使男孩们心烦意乱，他们到达了内布拉斯加州。凯尔随即注意到一家商场里出现了汉基先生的广告。
男孩们很快发现卡特曼的家人们很像卡特曼本人，他们都很肥胖，声音也与卡特曼相似，他们吃饭像猪一样，而且都使用相同的口头禅。
在圣诞节晚宴上，霍华德·卡特曼通过监狱的卫星电视出现在大家面前，斯坦告诉所有人他的父母已经死亡，至少对他来说已经死亡。
到了晚上，男孩们在地下室睡觉，但不久后，凯尔就惊醒了，他大喊着他做了一个他住在全是卡特曼的房子里的噩梦，斯坦告诉凯尔事实确实如此。然后，他们听到有人闯入，原来是霍华德叔叔与他的室友查尔斯·曼森越狱了。
The next day, the boys ask Cartman's family to take them to the mall, but being like Cartman they will not. In the basement, Charlie Manson offers them a ride since he wants some action to which the boys agree.
At the mall, Manson invites Kenny to a more secluded part of the mall. Kyle soon discovers that the Mr. Hankey is a guy in a costume who says there is no real Mr. Hankey. Kyle, driven by anger removes to head of the Mr. Hankey costume revealing the actor inside. The kids there soon riot.
Charlie Manson soon sees another Christmas special based on the Grinch but with Mr. Hankey. Manson finds it a brilliant thing how a nasty person can change to a nice one.
Manson returns with Kenny having had his tattoo changed to a smiley face. The police who have turned up to stop the riot spot Manson and the event leads into a car chase to the Cartmans' house.
Stan's parents soon discover that Stan sneaked away to Cartman's grandma's and follow.
At the Cartman residence, the police threaten Manson and Howard to make them come out. Stan's parents arrive, and he asks the escaping Manson and Howard if he can join them. Manson explains the importance of family and he decides to hand himself into the police. Kenny is also made to show a white flag in surrender, but is gunned down. Manson then apologizes to all the families he tore apart and wants to make himself an example to the world that crime is never an answer.
In the prison, Manson finishes writing another book and turns the light off sadly as he goes to bed. Suddenly the light is turned back on, the Cartman family plus the boys wish Manson a happy Christmas and sing "Hark the Herald Angels Sing".
Right before the episode ends, Stan remarks to Kyle how messed up the entire series of events was.