the Big Buddy sessions: Schacht's flossing demo
The vital thing here gentlemen being not the force or how often you rotate to particulate-free floss but the motion, see, a soft sawing motion, gently up and down both ancipitals of the enamel [...] down below the ostensible gumline into the basal recessions at either side of the gingival mound that obtrudes between the teeth, down below, where your most pernicious particulates hide and breed.
Context
Schacht runs his Big Buddy session as a dental-hygiene clinic at a giant plasticene mouth, and the pedagogy mirrors the tennis pedagogy exactly: it's "not the force… but the motion," a "soft sawing motion" repeated with craft down into the hidden recessions. The academy's body-discipline extends past the court into the maintenance of the body's every surface — the same earnest, technical, repetition-based rigor applied to enamel as to a forehand, teeth kept as an athletic-body asset.