Time to bump again.
Roger. Bump.
A hypoglycemic bump. 
A pleasant summer’s day bump.
A good night bump.
A pleasant evening bump.
I think it’s time for another bump.
What a thread-bumper Spoons is!
I need to water the back yard.
Bump.
It’s a tough job, but somebody’s gotta bump it.
Well, I’ll think of bumpthing to say here.
When you do, please bumping let us know.
What the bump?
Just a plain, ordinary, nothing-special, bump.
Bumpin’ right, mate.
Bumps for everyone.
Just bumpin’ along here.
You gotta go along to bump along.
Bumping in for reasons
Bumping in for no reason.