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The global value false is the only instance of class FalseClass and represents a logically false value in boolean expressions. The class provides operators allowing false to participate correctly in logical expressions.

Methods
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Instance Public methods

false & object → false
nil & object → false

Returns false:

false & true       # => false
false & Object.new # => false

Argument object is evaluated:

false & raise # Raises RuntimeError.

Source: show 

static VALUE
false_and(VALUE obj, VALUE obj2)
{
    return Qfalse;
}

true === other → true or false
false === other → true or false
nil === other → true or false

Returns true or false.

Like Object#==, if object is an instance of Object (and not an instance of one of its many subclasses).

This method is commonly overridden by those subclasses, to provide meaningful semantics in case statements.

Source: show 

#define case_equal rb_equal

false ^ object → true or false
nil ^ object → true or false

Returns false if object is nil or false, true otherwise:

nil ^ nil        # => false
nil ^ false      # => false
nil ^ Object.new # => true

Source: show 

#define false_xor true_and

inspect()

The string representation of false is “false”.

Alias for: to_s

false.to_s → "false"

The string representation of false is “false”.

Also aliased as: inspect

Source: show 

VALUE
rb_false_to_s(VALUE obj)
{
    return rb_cFalseClass_to_s;
}

false | object → true or false
nil | object → true or false

Returns false if object is nil or false, true otherwise:

nil | nil        # => false
nil | false      # => false
nil | Object.new # => true

Source: show 

#define false_or true_and