Tailwag is an expression that denotes unabashed, dog-like enthusiasm, e.g., booty-shaking. It is taken from the literal movement of the sacrum, which when released during yoga or bodywork, allows liberated movement.
Since I started jazz dance class, my tailwag is getting really funky.
Malfluence: the power to exert negative influence that exacerbates a person's worst qualities or culturally repressed behaviors.
Although it was not my style to use profanity at the office, under the malfluence of my supervisor, I began to use the disgusting navy expressions I learned from my father, and before long everybody started swearing freely (when clients were not present).