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general::
Phrase(s): squirm in(to something)
to press into something that is tight; to crawl or wiggle into something tight. (For people, this is often clothing that is too tight. For other creatures, it is more variable.) • Dave squirmed into his jeans and pledged to himself that he would lose some weight. • He squirmed in and knew he could never close the zipper.
McGrawhill's American Idioms And Phrasal Verbs