The grain weevil, also commonly referred to as the wheat weevil, is quite a little pest. As disgusting as it sounds, it is very likely that you have eaten them and their eggs. Most people are not aware of this information and you probably have not eaten an adult but rather their larvae, exoskeleton or even a shed leg. Unless you don’t eat any prepackaged food with grain such as pasta, crackers, cookies, cereal, etc., they are pretty difficult to avoid.