Good for your son! He and you both have the right attitude!
I was stopped once on my discharge day from the Army. I had a Toyota pickup loaded with everything I owned (it had a camper top). I was stopped along with about ten other cars for a "license" check. The cop examined my license and handed it back. He then asked "What's in the back?". I looked him straight in the cheesy sunglasses and said "Nothing that concerns you". He got really snippy, but in the end had to let me go. I was the last of the ten cars to pull away, and by the time I left he had his other two pals there, practically raving at how I was some kind of loon and how they would "find out anyway". Yeah, sure, no warrant, no search. Screw'em.
i agree 100 % brother!!! they always try that.."if you have nothign to hide, why can't i look??" just tell 'em..cause the 4th amendment to the constitution says they can't and then ask if they have ever either heard of or read that document?? they will piss their pants but will let you go..i told one once that he could search my vehicle if he would empty his pockets and let me pat him down first...he was in mid 20's and asked what i knew about a pat down..told him i worked for dept of corr for over 10 yrs..told him i had patted more people down in one morning than he had or probably would in his whole career..told him he had too many pockets on his uniform to get inside my vehicle!!!! he wasn't happy..asked me..don't you trust me?? i told him..sure..i trust you won't p[lant anything just as much as you trust me when i say i dont have anything..let's go see the judge!!! he did not like that and let me go..i distinctly heard him call me a crazy ole sob as i left!!!!!! lol