Two examples from Dictionary.com for like:
(1) I did it like wrong. [Adverb. Nonstandard. a) as it were; in a way; somehow]
(2) Like, why didn't you write to me? [Interjection. Informal. (...to preface a sentence, to fill a pause, to express uncertainty, or to intensify or neutralize a following adjective)]
(1a) I did it, like, wrong.
(2a) Hey, why didn't you write to me?
Collins possibly shows (1) and (2) as instances of the same thing, but labelled differently depending on AmE/BrE. The AmHDotEL shows be like as an idiom for to say/utter, and has an intriguing usage note saying : "If a woman says "I'm like, 'Get lost buddy!'" she may or may not have used those actual words to tell the offending man off. In fact, she may not have said anything to him[...]".
- Could you have (1a) as an instance of (2) i.e. the person hesitates and pauses but just means plain wrong and not wrong somehow?
- In what way is (1) Nonstandard as opposed to informal; could you say something like (1) at work for instance? Does that mean used by younger people?
- In (2), what other word or phrase would mean the same thing or play the same role as like here? Is this about emphasis, hesitation, are you saying "in a roundabout way", is that to "be like", or are you asking the person to themselves summarize why they did or didn't do something; or is it really just like (2a)?