I was wondering how many words in why this kolaveri di song belongs to english. So I wrote this code to evaluate.

why-this-kolaveri-di.py

#! /usr/bin/env
#! -*- coding: utf-8 -*-

lyrics = """
yo boys i am singing song
soup song
flop song
why this kolaveri kolaveri kolaveri di
why this kolaveri kolaveri kolaveri di
rhythm correct
why this kolaveri kolaveri kolaveri di
maintain please
why this kolaveri di

distance la moon-u moon-u
moon-u color-u white-u
white background night-u night-u
night-u color-u black-u

why this kolaveri kolaveri kolaveri di
why this kolaveri kolaveri kolaveri di

white skin-u girl-u girl-u
girl-u heart-u black-u
eyes-u eyes-u meet-u meet-u
my future dark

why this kolaveri kolaveri kolaveri di
why this kolaveri kolaveri kolaveri di

maama notes eduthuko
apdiye kaila snacks eduthuko
pa pa paan pa pa paan pa pa paa pa pa paan
sariya vaasi
super maama ready
ready 1 2 3 4

whaa wat a change over maama

ok maama now tune change-u

kaila glass
only english

hand la glass
glass la scotch
eyes-u full-a tear-u
empty life-u
girl-u come-u
life reverse gear-u
love-u love-u
oh my love-u
you showed me bouv-u
cow-u cow-u holy cow-u
i want you hear now-u
god i am dying now-u
she is happy how-u

this song for soup boys-u
we dont have choice-u

why this kolaveri kolaveri kolaveri di
why this kolaveri kolaveri kolaveri di
why this kolaveri kolaveri kolaveri di
why this kolaveri kolaveri kolaveri di

flop song
"""
dict_file_path = "/usr/share/dict/words"


def sanitize(words):
    for index, word in enumerate(words):
        if word.endswith("-u") or word.endswith("-a"):
            words[index] = word[:-2]


if __name__ == "__main__":
    # Get all words
    words = [word for line in lyrics.split("\n") for word in line.split(" ") if word != ""]
    # Load english words
    dictionary_words = open(dict_file_path).readlines()
    # Remove \n in dictionary words
    dictionary_words = [word.split("\n")[0] for word in dictionary_words]
    # Add missing words
    dictionary_words.append("boys")
    dictionary_words.append("snacks")
    dictionary_words.append("eyes")
    dictionary_words.append("english")
    dictionary_words.append("1")
    dictionary_words.append("2")
    dictionary_words.append("3")
    dictionary_words.append("4")
    dictionary_words.append("notes")
    dictionary_words.append("ok")
    dictionary_words.append("showed")
    # Remove -u which sounds like Tamil words
    sanitize(words)
    # Find unique words
    unique_words = set(words)
    # Find english words
    eng_words = [word for word in unique_words if word in dictionary_words]
    non_eng_words = unique_words - set(eng_words)
    # Remove empty element
    non_eng_words = [word for word in non_eng_words if word != ""]
    print("==English Words==")
    print(eng_words)
    print("==Non English Words==")
    print(non_eng_words)
    print("Total unique words: %d,\n English words: %d,\n Non English words: %d,\n Percentage of english words: %f" % (len(unique_words), len(eng_words), len(non_eng_words), float(len(eng_words))/len(unique_words) * 100))

Output
➜ lua python why_this_kolaveri_di.py
==English Words==
['over', 'skin', 'la', 'only', 'black', '4', 'rhythm', 'yo', 'di', 'choice', 'dark', 'background', '2', 'now', 'tear', 'notes', 'she', 'night', 'girl', 'for', 'god', 'please', 'moon', '3', 'correct', 'we', 'full', 'how', 'super', 'change', 'ok', 'reverse', 'cow', 'oh', 'love', 'dont', 'color', 'singing', 'come', 'pa', 'white', 'wat', 'empty', 'happy', 'eyes', 'gear', 'holy', 'boys', 'hear', 'me', 'distance', 'showed', 'this', 'soup', 'future', 'meet', 'my', 'heart', 'have', 'snacks', 'is', 'am', 'want', 'ready', 'dying', 'song', '1', 'you', 'hand', 'why', 'tune', 'a', 'glass', 'i', 'scotch', 'flop', 'life', 'maintain', 'english']
==Non English Words==
['kaila', 'sariya', 'paa', 'apdiye', 'eduthuko', 'vaasi', 'maama', 'whaa', 'bouv', 'paan', 'kolaveri']
Total unique words: 90,
English words: 79,
Non English words: 11,
Percentage of english words: 87.777778

Blog Post
http://kracekumar.com/post/55796363713/why-this-kolaveri-di-song-words-language