The phrase "big glob" refers to a large clump or lump of something. It can describe something that is mashed or stuck together in a messy way. Full definition
It showed a perfectly white arena, giving the user the opportunity to define it by throwing big globs of black paint everywhere, which spattered convincingly against walls and acted as a sort of acrylic sonar to guide the player through the world. (theguardian.com)
Use a metal spatula to chip off big globs on baked - on food. (rentersinsurance.net)
Came out in big globs, then melted within the batter as the pancake cooked, ended up like scrambled pancakes. (life-in-the-lofthouse.com)