Need of help

I got given a skateboard that I broke It and now I want to replace it before they realise but I don't know what brand it was, it was labeled R inside of a diamond shape, it had a bipicture of a girl in underwear on the back

The <R> was the logo of Ralia skateboards, a small Aussie company but I don't think they are around anymore? Word of advice, boards break all the time, you just replace em with another one. Unless the dude had it in a glass case on the wall and you racked it hoping he would never find out, he'd be happy with any old board. The main thing you want to make sure of is that the one you get is the same width, take a bit of the broken deck into a proper skate shop (aka not a surf shop that sells boards too) and they will sort you out.