Sentence:  these are often my thoughts as my partner or my vis-a-vis spoons a berry into her mouth and I imagine it—see and hear it being chewed, the red juice running from its bursting pulp over her tongue, mingling with her saliva, slipping through the crevices between her teeth before <WSD>sluicing</WSD> down her throat and into her bloodstream. 
Meaning of the word marked with <WSD> tags:  To flow, pour.