When I first started getting tattoos, my thoughts were to get generic ones, so they would always be something you would like. Now that I'm older, my tattos are a like a track record of my life. Even the ones that have to do with something I'm not really into anymore have the same amuont of meaning, because they remind me of the good memories I have had in my life during those times. Your scout build is a good example of this.
So don't let anyone give you crap about it. You will now forever be reminded of the good times you have had playing with trucks.