SNOT (Studs Not On Top) is the term used for building with techniques to change the brick(s) direction.

SNOT (Studs Not on the Top) is an advanced building technique which allows for more creative models, often allowing builders to add extra detailing to walls or create more interesting angles, etc.

These can be accomplished either using specialist SNOT or "with knobs" bricks and plates:

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Or with items such as hinges, etc to change direction and angle.

Example of SNOT building

For further reading see:

SNOT – Studs Not On Top on holgermatthes.de

See also the Related technique of (Studs Not In Row)