HYPE! Mimez at Tufts University, New England’s only collegiate mime troupe, presents its spring show, “On the Straight and Narrow.” The show will feature all new works — laugh, cry, tremble in fear. But because April 20 also is Easter Sunday, the mimez are on the straight and narrow this year. Admission is free; reserve a ticket through the Tufts online box office. HYPE! Mimez is going on 27 years old. Members write direct, technically design, and perform skits for both the Tufts campus and the surrounding Boston community.