Teeth

"I don't know how you do it," Fielding commented, shaking his head. "I couldn't - and that's a stone cold fact." "It's not for everyone," Young responded, getting the tray ready. "And it's so dangerous," Fielding continued, following his colleague's instructions on how low to dim the lights. "Deep dark dangerous, my friend. I worry about you every time." "I appreciate it, but there's no need to worry," Young responded (touched). "I provide a valuable service. "The xenomorphs have no access to care across the cosmos; I'm it. I'm the last lifeform they'd use for hosting or food. You, though ... it's almost time, so you need to go." "Jeeeeeeebus," Fielding whistled through his teeth. "Why? Why did you take this gig through NASA? WHY?" Young smiled, taking his friend at the elbow and escorting him to the office door. "Teeth," Young said softly. "I'm a dentist because I like me some teeth.”