Like Paul Simon’s song “50 ways to leave your lover,” there are at least fifty ways to tell a police officer that you do not consent to any searches. Make an excuse if you like: “I’m late, for a very important date.” But no excuse is necessary. You should not offer any justification for refusing a search. Be confident and politely insistent. It’s your legal right to be secure from searches and seizures by police unless they have a search warrant or an exception to the warrant requirement.