Sinatra app to test what verbs your browser supports for forms, it's probably just POST and GET, though... :(

verb_tester.rb

require 'sinatra'
require 'coffee-script'
require 'slim'
require 'sass'

enable :sessions

helpers do
  def verbs(&block)
    verbs.each(&block) if block
    %w[get post put delete options patch foo]
  end
end

before do
  session[:requests] ||= {}
end

before '/submit' do
  next unless method = params[:method_was]
  session[:requests][method] = request.request_method
  session[:last_request]     = method
  redirect to('/')
end

get('/') { slim :html }
get('/js') { coffee :js }
get('/css') { sass :css }

__END__

@@ html
doctype html
html
  head
    title Browser support for HTTP verbs
    script src='http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js'
    script src=url('/js')
    link rel='stylesheet' href=url('/css')
  body
    form#test_form method="get" style="display: none" action=url("/submit")
      input#method_was name="method_was" value="get"
      input type="submit"
    table
      - verbs do |verb|
        tr
          th= verb
          td= session[:requests][verb] || "-"
          td
            button onclick="testVerb(#{verb.inspect})"
              | try

@@ js
window.testVerb = (verb) ->
  $('#test_form').attr 'method', verb
  $('#method_was').attr 'value', verb
  $('#test_form').submit()

@@ css
th, td
  font:
    family: Verdana, Geneva, 'sans serif'
    size: 80%

th
  text-align: right