1) The act of assigning or discussing ones
work with a colleague right when they are about to leave.
2) The act of cutting any food item into obnoxiously small pieces for
one's own personal gain.
3) The act of being lathered in tuna butter.
"Bill was getting ready to meet his
friends at happy hour on a thursday evening when his
boss Tuna'd him with another hour of monotonous
work."
"Who Tuna'd this peppermint patty?"
"It sure smells like someone got tuna'd in here today"