Marliave has a fabulous oyster happy hour every day from 4pm to 6pm and 9pm to 10pm with dollar oysters and clams. They also have a delightful drink list and a fun outdoor grotto! http://www.marliave.com/home/
Boston is awesome. Stop sitting on your couch and get out and enjoy it. 20's and 30's aged people --- come on out for a bunch of fun events. Anything from happy hours, to hikes, to sporting events, to concerts, to coffee... anything awesome.