My boyfriend is a "G", how do I explain to my parents we are getting married. ?

4 those of u who don't know what a "G" is don't even reply, keep it movin. For those of you who do, then u understand my dilema. I love my man and we have been 2gether for a long time through all the ups and downs and its just that time to tie the knot. we r both ready and on the same page. we have an 8yr. old and a 2yr. old. i have a college degree, a great career, working on my masters, we just brought a house. I'm independently established, and doing well so if anything ever happened to him in the streets the kids and I would be okay. Hell, weather he is a "G" or not something could happen anyways. My parents have no idea what exactly it is he does, all they know is he is good to me and the kids, but if we get married my parents especially my father is going to want to know how it is he supports us. Do we tell the truth or stretch it? I am in no way ashamed of my man and am proud of him. But i don't know how to eplain to my parents he is a G, and am scared they will disown me.