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 & obj => false nil & obj => false

And—Returns false. obj is always evaluated as it is the argument to a method call—there is no short-circuit evaluation in this case.

Source: show 

static VALUE
false_and(obj, obj2)
    VALUE obj, obj2;
{
    return Qfalse;
}
false ^ obj => true or false nil ^ obj => true or false

Exclusive Or—If obj is nil or false, returns false; otherwise, returns true.

Source: show 

static VALUE
false_xor(obj, obj2)
    VALUE obj, obj2;
{
    return RTEST(obj2)?Qtrue:Qfalse;
}
false.to_s => "false"

‘nuf said...

Source: show 

static VALUE
false_to_s(obj)
    VALUE obj;
{
    return rb_str_new2("false");
}
to_yaml( opts = {} )

Source: show 

     # File lib/yaml/rubytypes.rb, line 393
393:         def to_yaml( opts = {} )
394:                 YAML::quick_emit( nil, opts ) do |out|
395:             out.scalar( taguri, "false", :plain )
396:         end
397:         end
false | obj => true or false nil | obj => true or false

Or—Returns false if obj is nil or false; true otherwise.

Source: show 

static VALUE
false_or(obj, obj2)
    VALUE obj, obj2;
{
    return RTEST(obj2)?Qtrue:Qfalse;
}