Alternate Universe Adventure time: Evil Finn and Jake

Cake hisses at Fionna. Fionna scowls at her. Cake hisses again. Fionna scowls again.

"Wait..how long have we been doing this?" Fionna asked. Cake shrugged.

"Probably an hour or so." She replied.

"We better to the castle we've wasted enough time already." Fionna said urging her.

What does Cake do?