consider boundary layer over any body.... fact is that they have surface velocity as zero this cause no slip condition.... so that any body over the surface of them will not slip when they are moving in stream of fluild.. eg we see in earth boundary layer over the earth does not allow one to slip from one place to another during jumping.

Yes, the transmission will slip and eventually burn out if you continue to drive it in that condition.

A moving fluid will take zero velocity with respect to solid boundary when sticks with that solid surface.

A circulation slip is a slip that circulates