thrombulate
to jiggle a juicy bum by placing palm just beneath lower cheek (subject is lying down on front), and rhythmically creating a massaging wave of juiciness that spreads up through glute muscles & into sacrum area. Claimed by those who have that booty thiccness to be intensely therapeutic and pleasurable.
"that waterfall hike was beautiful, but i definitely needs hubs to give about 2 hours of thrombulates when we get home."