To reveal or disclose and show the presence or true character of, especially if unintentionally or incidentally, or else if perfidiously, prejudicially, or to one's discredit.
To expose or rat out (someone).
To reveal, divulge, or make (something) known; disclose.
To report (a person) to someone in authority for a wrongdoing.
To play truant
In the scouting movement, to chant dob to indicate that one will do one's best to follow the scouting laws.
To nominate a person, often in their absence, for an unpleasant task.
To do one's share; to contribute.
A small amount of something, especially paste.