You were helping Donnie with his invention. He needed some one to hold the invention still while he worked on a specific part of it, so he called you over.

“There you go, hold it like that.” He muttered, putting his goggles on and poking at something with tweezers. You were doing a good job, when something sparked and stung you.

Donnie seemed to notice, because he quickly took off his goggles and looked at your hand worriedly. “You okay? That looked like it hurt.”