>>1485594only way for sure is lying (sudden death in family, mom/dad in critical condition) if you're good at it
but honesty paired with clear, early, and cordial communication with your professor can work wonders. professors have heard every excuse ever and know 90% are horseshit. most professors do want you to succeed, but they don't want you to have an unfair advantage over other students. 90% of the time, a couple day extension isn't really going to be that unfair. if you show them that you post in /wsr/ with a luckystar OP they'll probably understand there's no advantage that would ever make other students feel disadvantaged against you