The phrase "biting more than can chew" is a common idiom used to describe someone who has taken on more responsibilities or tasks than they can handle. This phrase is a figure of speech used to express a warning to those who tend to overestimate their abilities. However, there are other phrases and idioms that have a similar meaning to "biting more than can chew." Some of these include "overstretching oneself," "spreading oneself too thin," "out of one's league," and "in deep water." It is important to recognize when you have taken on more than you can handle and to seek assistance or delegate tasks accordingly.