A Greek nymph with such a lusciously soft warm mouth that she was able to charm Odysseus into staying with her for seven years by giving him phenomenally pleasurable blowjobs every day.
If Calipso had such wonderful male-pleasuring-equipment "upstairs", one can just imagine how absolutely insanely delectable her DOWNSTAIRS "lips" must have been. Maybe if she had offered Odysseus access to these sumptuous womanly treasures in addition to her "kissing parts", he might have changed him mind about wanting to leave her and return to his wife.