Definition from Wiktionary, the free dictionary
be like (as be + like)
- To be similar to something.
- They must be like the last group who stayed.
- (informal, chiefly US) To say
- If he's like "I don't want to", then be like "Pretty please! - it means a lot to me".
- The use of "like" to mean "say" is considered by many to be overly informal, and normally only occurs in spoken English.
- The words after the "be like" may not actually be what was said, but instead a summary of what was said. Similarly, unlike "say", "be like" may be impersonal, e.g. 'She was really insistent. It was like "I really need that right now!"'
- The words after the "be like" may not actually be spoken, but instead be intended to represent a mood in which that thing might be said.