New Delhi, July 19 (IANS) After tickling the funny bones of their fans with 'Hera Pheri' 'Garam Masala' and 'Bhool Bhulaiyaa', the hit pair of director Priyadarshan and actor Akshay Kumar is back for the sixth time with yet another light-hearted outing, 'Khatta Meetha', which releases Friday.