Heenan's Universal Dictionary

A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R - S - T - U - V - W - XYZ

OARGASM
Sex in a small boat (see crewgasm). 

OBSOLETE
No longer used by the timid; said chiefly of words.   [Ambrose Bierce]

OCCIDENT
The part of the world lying west (or east) of the Orient.   [Ambrose Bierce]

OFFSIDER
Assistant, helper.   [Strine]

OHNOSECOND
The moment that you realize you've made a big mistake.   [Palo Alto]

OMEN
A sign that something will happen if nothing happens.   [Ambrose Bierce]

MINOR OPERATION
Somebody else's   [Rural]

OPPORTUNITY
A favorable occasion for grasping a disappointment.   [Ambrose Bierce]

OPRAHFICATION
Public confession as therapy.  [Anon]

OPTIMIST
[1] A proponent of the doctrine that black is white.   [Ambrose Bierce]
[2] One who fills a crossword puzzle in ink.   [Clement Shorter]

ORGAN TRANSPLANT
What you do to your piano when you move   [Rural]

OSTEOPORNOSIS:
A degenerate disease. [Anon]

OUTDO
To make an enemy.   [Ambrose Bierce]

OUTPATIENT
A person who fainted  [Rural]

OYSTER:
A person who sprinkles conversation with Yiddish expressions. [Anon]