Our favorite tight end, Rob Gronkow­ski, has designed three different T-shirts, and he’s asking people to vote for their favorite one on Facebook. One T-shirt is emblazoned with the slogan “Gronk Up Your Life,’’ while another features drawings of a football, a cruise ship, dumbbells, a green dinosaur (a.k.a. Gronkasaurus), a woman in a bikini, and other Gronk-related phrases and doodles. The third style of shirt (and our top pick) is a wearable version of Gronk’s to-do list (i.e. “get hyped,’’ “lift weights,’’ “be cover model,’’ “fiesta,’’ “win another championship’’ . . . check, check, check). The shirt that gets the most votes wins, and proceeds from the sales will support the nonprofit organization, [Expletive] Cancer. To cast your vote, visit Gronk’s Facebook page: www.facebook.com/ RobGronkowski.