The phrase "wet cement" refers to cement that is not yet dried and hardened. It is used figuratively to describe a situation or person that is easily influenced or vulnerable. Full definition
It's the film equivalent of wet cement, in the texture of the visuals, and the texture of your brain after enduring it for 126 minutes. (seventh-row.com)
They stop things as if hitting a wall of wet cement, so we were able to late - brake with almost no fading by the final hotter lap. (cheersandgears.com)
Running on wet cement is dangerous, but if there are no pool rules against it or there are no lifeguards to warn the swimmers, then a slip and fall can constitute an injury claim. (personalinjuryattorneysmiamifl.com)