The thickness or thinness of a man's semen doesn't really mean anything. It has no bearing on his fertility or his sexual prowess. All it means is that some men make more fluid in their accessory glands than others.
It could mean that there is a low quantity of sperm cells in the semen. Or it could mean that the semen was exposed to air, as semen gets thinner within a few minutes.
Thicker cuttings are easier than thinner ones
Thinner.
thicker
Lotion is thicker than fluid.
thinner
The cuticle is thinner than the epidermis
thinner
The crust is much thinner than the mantle.
The crust is much thinner than the mantle.
The crust is much thinner than the mantle.
A convex lens.