3.1. To bulge is to stick out, making a bump called a bulge. A leak in the roof might make your ceiling bulge, and a giant feast could make a bulge over your waistband.
3.2. “His stomach bulged after the huge meal”
3.3. Synonyms: pouch, protrude
4. when a males dick and balls bunch up in their pants to form a bulge-like form.
4.1. " His pants are so tight you can see his bulge."