irb(main):001:0> class A
irb(main):002:1> def test(thing)
irb(main):003:2> puts "#{thing}! from class A!"
irb(main):004:2> end
irb(main):005:1> end
=> nil
irb(main):006:0> class B < A
irb(main):007:1> def test(thing)
irb(main):008:2> super(thing)
irb(main):009:2> puts "...and now from class B too!"
irb(main):010:2> end
irb(main):011:1> end
=> nil
irb(main):012:0> b = B.new
=> #<B:0x2002cbcc0>
irb(main):013:0> b.test("chunky bacon")
chunky bacon! from class A!
...and now from class B too!
=> nil