Self-serving

First, someone borrows from oneself. Page 401, Comments and Cases on Obligations and Contracts, 2010 Ed., by De Leon:

Next, he sells to himself.  Page 120, same book:

Then he paid to himself.  Page 495,  Comments and Cases on Partnership, Agency and Trusts, 2010 Ed., by de Leon.

(See the bonus typo.)

 Finally, after so much confusion, she ejects her own self. Page 676, same book: