Lobster lovers can live it up Sunday through Tuesday nights at UpStairs on the Square’s Lobster Extravaganza. Proprietresses Mary Catherine Deibel and Deborah Hughes are getting creative with the much-loved crustacean, serving it in four tasty preparations for the rest of the summer. Stop by for a beginning-of-the-week dinner and a 1½lb lobster can be yours – you’ll just have to decide which way you want it. Whether you opt for straight up or stuffed, you’ll also get corn on the cob and a side of summer slaw for $28 (unless otherwise noted). Book a table by calling 617.864.1933.