Do something in a slow, leisurely, and pleasant manner, and you do it languorously. While your friends spend their weekend shopping at the mall, you prefer to spend yours lounging languorously in a hammock with a book.
Being a little sleepy or dazed, or feeling slightly lazy and self-indulgent, can lead you to act languorously. You might float languorously on your inflatable unicorn raft in a swimming pool, or sprawl languorously on the couch to watch TV on a rainy afternoon. This word comes from languorous, which originally meant "mournful," from the Latin root languere, "be weak or faint."