Isn't that sweet? Papyrus took damage from you and didn't tell his brother. Almost like he suspects something is going on.. Here Flowey, just to cheer you up, here's a yummy tummy gummy worm that does not have the trickster virus in it and is green. Aww- don't be so mad sweetie, you're too cute when you're mad. When Papyrus is away, the Sans will "play." Hey, it's no problem if you're not ready, you can just tell him that. Hey, c'mon. You don't have to talk to him if you don't want to. I'm sure he's not expecting an answer yet anyway. Just tell him it was us, Flowey. 

Flowey, stay calm. Just take a deep breath and collect your thoughts. He just wants to talk, Flowey. Remember Flowey, think calm thoughts and things will get better. NONONONO. PLEASE STOP, SANS. Er.. some of the guests thought that you were tossing Flowey into your shortcut.. From Flowey's expression it seems he was expecting the same thing too. WHAT THE HECK SANS! DO SOMETHING! 

Gah Sans you bonehead! You've LITERALLY threatened Flowey that you would leave him in there! Several times in fact. Can you really blame him for being terrified whenever you open up a shortcut? To add on you seemed annoyed without cause, which didn't exactly help your case. Or have you forgotten that yelling at children doesn't work? Just a reminder: Flowey is still a child, a soulless child at that. You cannot expect him to fully understand if you don't communicate.