goop

The flesh [of the mistletoe berry] is sticky, and forms strings and ribbons between my thumb and forefinger. For the mistletoe, this viscous goop – and by the way, viscous comes to English from viscum – is crucial. The stickiness means that, after eating the berries, birds often regurgitate the seeds and then wipe their bills on twigs – leading to the seeds' getting glued to the tree, where they can germinate and begin the cycle anew.

I pointed out that Stiffy, who is pure padded cell from the foundation up, was planning to marry the Rev. H.P. Pinker, himself as pronounced a goop as ever preached the Hivites and Hittites