Remedy for hiccup , guaranteed !!!

Yesterday I have a bad hiccup like for half an hour. Normally if I drink water, it'll go away. This time is the worst. So I go online and search for remedy. The first thing I read is to plug my ear with finger and swallow water/saliva. Immediately my hiccup stop. OMG. It's so magical that I cannot believe it. LOLOLOLOLOL