1) Despite his best efforts, the lean-witted student struggled to grasp the complex mathematical concept.

2) The comedy show fell flat with its lean-witted jokes that failed to elicit any laughter.

3) Their lean-witted boss often made hasty decisions without thoroughly considering the consequences.

4) The lean-witted detective overlooked crucial evidence that led to the wrong suspect being arrested.

5) The lean-witted driver struggled to understand the traffic signals, causing confusion on the road.

6) The lean-witted employee had trouble following the detailed instructions for the new project.

7) With his lean-witted responses, he consistently failed to provide meaningful contributions during team meetings.

8) The lean-witted character in the movie served as comic relief with his clumsy antics and misunderstandings.

9) The lean-witted salesperson was easily duped by tricky customers who took advantage of his naivety.

10) Due to their lean-witted nature, they often found themselves being taken advantage of in social situations.