Lekker is a commonly used word in the Dutch language that is more similar to the word English word luscious than the word tasty. Lekker is used to denote something delicious or sweet, and is more commonly used by the under 30 crowd as a term for a woman having sex appeal. Lekker, like luscious, has a sexual connotation. In South Africa, however, lekker has primarly been used in place of the English terms "cool" or "sweet," with a much more broad, less sexual, undertone.
That girl was so lekker!