The name of the composer Lyotard reminded me of the word "leotard".
I was surprised to find that "leotard" is an eponym:
leotard
n.
after J. L=otard, 19th-c. Fr aerial performer6 a one-piece, tightfitting, sleeved or sleeveless garment that covers, usually, only the torso: it is worn by acrobats, dancers, etc.: see also UNITARD

Dear Faldage: your "quoi" could be either knock or boost.