What should I do if my neighbor puts up a flag that looks like this?

2015-06-27T15:13:02Z

Nevermind..sorry..I couldn't attach the photo. The procedure has changed since I tried last. Guess I'm a big idiot.

CAPS LOCK2015-06-27T15:04:06Z

A question mark flag? Probably you should proceed to barbecue some bratwursts.

?2015-06-27T15:03:35Z

A blank flag is not a threat.

Dylan2015-06-27T15:03:29Z

Tell him Yahoo Answers will probably pay him to advertise

?2015-06-27T15:08:59Z

laugh in his face and he would probably laugh in yours