fill one's pants

== English == === Pronunciation === === Verb === fill one's pants (third-person singular simple present fills one's pants, present participle filling one's pants, simple past and past participle filled one's pants) (slang, euphemistic) To defecate, urinate, or ejaculate in one's pants, especially as a result of fear or amazement. ==== Synonyms ==== See Thesaurus:soil oneself