Hello, buttons

Button text I would like to see online. A few ideas. Nothing special.

Next alternatives:

• More please
  
• Hit me
• Giddyup
• Tally Ho
  
• Onward!
  

Back alternatives:

• WTF?!
• Uh oh.
• Woah Nellie
• This ain't right
  

Okay/Yes alternatives:

• Copy that, chief
• Gotcha
• Gimme
• Hit me*
  
• Yeeehaa
• Affirmative

*Yes, ambiguous: Hit me works for Okay or Next. But used consistently on site, it could work well, don't you think?