Car's Tyre Punctured

Alamak... an hour ago my car's tyre punctured. My mum was in my car. Luckily, i called my friend and he came with another friend of his to help me to change the tyre. Hehe, my friend also dunno how to change..wuahaha..i know the steps of changing car tyre but i dont have the energy to open the nut. I was jumping and jumping but still couldn't loosen the nut. Anyway, now im safe and sound. huhu....tomorrow gotta go to tyre shop. $$$$ fly away...