1. Have you guessed the identity of the person of who I am speaking? 2. It was him asking about the clock that started me suspecting him.
3. They – Jerry and her - are the troublemakers.
4 Mrs. Van Dumont awarded the prize to Mona and I.
S. The counterattack was launched by Dusty and myself.
6 Pronoun Reference
is to refer in a brief, convenient form to some

1.   Have you guessed the identity of the person of whom  I am speaking?

2.  It was his asking about the clock that started my  suspecting him.

3.  They – Jerry and she  - are the troublemakers.

4.  Mrs. Van Dumont awarded the prize to Mona and me.

5.  The counterattack was launched by Dusty and me.

Explanation:

it can be both; depending on the situation at hand.

explanation:

let's just say i get in to a confrontation with someone, and they say "ur mom", it could be seen as an insult. or depending on the relationship or comfortability with the person it may be seen as a joke. the distinct line is how the chemistry behind the confrontation.