It depends on who "you" are and where you land.

If you are a woman wearing jeans and land in London, you can be arrested for travesty, cross-dressing. A knee-length or shorter skirt buys you indecent exposure.

If you are a black man, land in Alabama, and check out a pretty white girl, you can get beaten half to death or lynched.

If you, a man, land in many American small towns, stump your toe, and say what most of us do, a nearby gentleman or three may object to such language if there are women present. If you tell them to **** off, you may get a thrashing. If you don't use obscenities but profanities, the same may happen. Depending on local regulations, a cop may write you a ticket for indecent language or blasphemy. If you can't give an address, you may get run in for vagrancy. The money in your pocket is very bad counterfeit. If you keep insisting you are a time traveller, you could get committed to a lunatic asylum by a judge.

Spitting on the sidewalk was also a common misdemeanor. In an age terrified of the white plague, anti-spitting laws were meant to reduce public transmission of tuberculosis in saliva.

On the other hand, in Paris no one cares if a woman wears trousers and they aren't anti-black anywhere near as much as anti-Semitic.