Contracts of adhesion have nothing to do with mastic, glue or paste. Instead, they are something that contractors, particularly those who engage in contracting with public entities, should know about.
One of the definitions of a contract of adhesion is that it is a contract “ . . . presented on a take-it-or-leave-it basis, commonly in a standardized printed form, without opportunity for the ‘adhering’ party to negotiate more reasonable terms except perhaps on a few particulars.” The significance of that type of contract is that some of the terms of contracts of adhesion may not be legally enforceable.