Shoveling it in is an expression that describes someone who is eating very quickly or greedily. It can also imply a lack of regard for healthy eating habits. Some synonyms for this phrase include gobbling, wolfing, or scarfing down. These all convey a sense of hurried and excessive eating. Other similar expressions include chowing down, pigging out, and stuffing one's face. These phrases are commonly used to describe individuals who have a voracious appetite or who simply enjoy indulging in their favorite foods. However, it's important to remember that overeating can be harmful to one's health and wellbeing.