Another theme is humor. Since Bugs Bunny is known for his comical antics, fanfictions usually incorporate a lot of funny situations when he's paired with Tina. This can include things like Bugs' pranks and Tina's reactions to them, which makes for an entertaining read.
There's a fanfiction that focuses on Bugs Bunny and Tina's friendship. In this story, Bugs helps Tina overcome her fear of heights by taking her on a hot - air balloon ride. It's a really heartwarming story that shows the bond between them.