[Raising his hand in a good bye, getting ready to leave... and then it hits him. Gum. She was chewing it before. She was chewing it after... so unless she's got some mad sleight of hand skills there's no way she didn't keep it in her mouth during and ohgod that makes this semi-nice thing really disgusting.
He will not acknowledge this. He may take a detour to his apartment to scrub up, but he will not acknowledge this.]