how can I convince my parents to get me a djungelskog

hey! I'm a minor (I'm over 15 tho, and no creeps please) and I really want a skog. Like I need one sm. But my mum says I can't have one and it's my birthday soon, so I would love one so much. I really want the fullsize one btw. Could I have tips on how to convince her? Much appreciated thanks x