While he would brush his testh it was with a bug and only made his teeth worse. Shrek showed an utter disregard for personal hygiene and had little to none manners. He also has a violent sense of humour, when Prince Charming had overran Far Far Away he ambushed him in his dressing room and threateningly said "break a leg, or on second thought let me break it for you." This also shows when Donkey and him were at the Dragon's Keep and when he discovered his friend had a fear of heights, he swayed the bridge back and forth. Shrek has shown a dislike towards Fairy Tale Creatures, once they overran his swamp he became enraged to the point of screaming. Shrek has a short temper and is easily frustrated, the source of all this appears to be his best friend Donkey whom he considers a nuisance as he is both talkative and annoying, he normally resorts to using mild biting remarks to vent his anger or will occasionally yell towards him if he is that frustrated. Due to all the people he meets Shrek is used to being treated like a monster and is left surprised when Donkey has no problem with his appearance or his ogre roots. When meeting new people Shrek is heavily sarcastic, when meeting Donkey the first time and asked for a place to stay Shrek agrees only to say no the second time he asks. However behind this tough demeanour, Shrek is incredibly insecure and sought recluse from everyone as they judged him as a monster before getting to know him and believed that he was better off alone. Shrek is overly aggressive and hostile towards strangers who wander into his swamp, an example of this is when several villagers came to kill him but then were left terrified when Shrek described ogres as ten times worse then giants after they fled, the ogre gave a hearty chuckle and warned them to stay out.