He had never seen paper money before. Hawke very gently plucked it from her fingers and examined it. "This feels more like cloth than paper," he said as he resisted the urge to rip it just to see if he could. It certainly didn't feel as sturdy as coin. "I think I prefer coin. It's hard for me to believe this is worth anything."
But he gave it back to her because he was no thief. She had earned this money through whatever work she had found. "I think I will see what sort of horrors I pull up from the lake before I think about selling them." Maker knows he'd end up poisoning everyone considering the horrors of this place.
"From your context I assume burger is a food and not some sort of animal or person," he teased. That slang was easy enough to parse out.