He probably signed something that showed his interest in the Marines to get a prize. His mom doesn't know he did it.
I do sympathize for this kid because this happened to me as well! The military has every high school junior (might be senior, I can't remember exactly) take a test called the ASVAB . . . at least they did when I was in high school.
I'm the type of person that hates to perform poorly on a test, even if there is no incentive to do well. I ended up scoring in the top 1% in the nation on the test.
From that point up until I graduated from high school (and even somewhat after I was in college) I received phone calls from the military no less than 3 times a week. The Marines were the worst at this. They repeatedly pressured me to meet with them until I finally agreed to let them take me to lunch one day for pizza. I spelled it out to them at that point that I was NOT interested in joining the Marines. They kept badgering me on how I was stupid for wanting to go to college (yes, they used that phrase) and how the Marines could provide me anything that college could, plus more.
I have the highest respect for our military and the people in it . . . except military recruiters. I have little respect for them since that whole ordeal.
Probably