By Sarah Tetteh Machine Gun Kelly has revealed his latest tattoo – and it’s not for the faint-hearted. The rocker, who is engaged to actress Megan Fox, stunned fans when he revealed the latest inking on his body – and it is huge. The massive new tattoo needed 44 needles to create. As he unveiled it on Instagram, the rapper turned rocker, showed fans his ideep side. The tattoo read: ‘For spiritual purposes only.’ The huge inking takes over his arms and chest and covers most of his past tats too. The artwork forms the silhoute of a cross on his chest. His arms were decorated with a selection of …