The leafstalks of most palms are canaliculate.

Whereas the “fourth wall” is the term generally used to refer to the barrier between audience and actors, the “fifth wall” has sometimes been invoked to describe “that semiporous membrane that stands between individual audience members during a shared experience.

The surface texture [of galvanized metal] can also be controlled and, in particular, the classical spangle finish can be eliminated. The spangle finish of galvanized strip is quite unsuitable for certain applications, most particularly for organic liquid paint coating; it is practically impossible to paint a galvanized sheet with normal spangle in such a way that the pattern of the spangles is not apparent through the coat of paint.

Sadly for you, Cara gets just as much of a kick out face-stalking them as you do.