Teats, on occasion, become so plump and filled, milk may escape without suckling.
en.wikipedia.org This, and the fact that seen from the side they resemble a hairy plump bee, has given them their common name.
en.wikipedia.org The staff used in the churn is known as the dash, dasher-staff, churn-staff, churning-stick, plunger, plumper, or kirn-staff.
en.wikipedia.org The stem is rather plump and stout, 1.5to4.5cmin 1 long and 0.5to1.7cm 1 thick, more or less cylindrical, tapering downwards towards the base.
en.wikipedia.org Like many genera that feed solely on snakes, it has developed a triangular body shape as opposed to the plump, rounded body of other snakes.
en.wikipedia.org