Slower than a herd of turtles

Meaning

Used to mock the lack of speed of a person or a process. It implies an almost comical inability to get moving.

Sarcastic, humorous

Used in a sentence

• That old truck is slower than a herd of turtles.
• We are never going to get to the lake if you drive slower than a herd of turtles.
• The loading process was slower than a herd of turtles, so we stayed late.