The best food in the entire world. Could be a problem for the police though...
Police: Step out of the vehicle please!
Person: I haven't taken drugs! I swear! I've been eating poppy seed bagels!
Police: ... Ok! Have a wonderful night!
Person: Ok! Thanks!
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.