The word "God" - used 85% of the time non-seriously

Many (but not all) religions and the people who subscribe to them, affirm the existence of one or more "gods."  The belief in the supernatural may, however, include very specific beliefs about the existence or occurrence of one or more particular supernatural beings that are in some sense, "supreme" beings (that is, not just "superior" to nature, animals or humans).

In the contexts in which it seriously occurs, "god" generally designates some force, entity, being or process that is affirmed as a proper object of human worship. To "worship" some X is to venerate it, address prayers and praise to it, be obedient to it, hold it in awe and as a target for ritual practice, and so on.

Although those who worship some X would seem, by their practice, to imply that it deserves their veneration and so on, there remains an important question to the outsider -- "Does the target of their worship actually deserve it?"  All would agree, however, that anyone who worships something that does not deserve it worships a "false" god.

The affirmation that some X or other is a proper object of worship ( and is, hence, to be called "god") has been articulated in many ways --

• Animism - All the objects and phenomena have a soul. Worship of the ancestors , superstitions, magic 
• Polytheism - Believes in several gods who act on the world 
• Pantheism - Aims its worship at any and all things (either distributively or collectively), seeing them all as inhabited by spirits or beings of the sort that animism singles out. 
• Henotheism - Belief in or worship of one deity without denying the existence of other deities. 
• Dualism/bitheism - is the belief that two separate, complementary forces or deities exist (light/dark, wet/dry and so on). 
• Deism - Believes in a creative God, first cause, who does not intervene in human business

If you don't believe in God, can you say, "Oh my God?"