#1-Sneaking around or passing by.
#2-Scheming a secret plan to benefit oneself and harm or not help others.
#3-Unreasonable strutting by an ugly person.
ex- Johny has been platypusing around trying to peep in the womans bathroom.
ex- George. W. Bush has been platypusing the American Public for eight years.
ex- Tina has been platypusing in the nightclub for the whole evening, so the number of stiffys has hit a record low.