If you’ve always wanted to smell like a mix of sweaty locker room, tanning salon and testosterone, “Jersey Shore” star Mike “The Situation” Sorrentino is launching his own cologne, “The Sitch.” He was bragging about it at Mansion Miami the other night. The Situation — who hosted a “best ripped abs” competition and sipped Into2 energy drinks with co-star Jenni “Jwoww” Farley — then boasted of his starring role on the MTV show, saying, “Other than myself and a few others, the rest of the cast were extras.” Ah, the sweet smell of success.