Sticky fields: copy fields from previous records?

[boxboxbox]

This is probably easy, but:

When I'm entering records, sometimes data in fields is similar and I want to have it carryover into the new record. (This is called a Sticky Field, in a different database I have.) Is there a way I can set this up to be able to click on the label, and have its corresponding textbox data copy into the new record, and then when I click again on the label, have it stop doing this?

Thanks!