A spoonerism is a spoken phrase in which the first letters of two of the words are swapped around, often with amusing results.
In its most basic form a spoonerism is a two word phrase in which only the first letters of each word are swapped:
```"not picking" --> "pot nicking"```
Your task is to create a function that takes a string of two words, separated by a space: ```words``` and returns a spoonerism of those words in a string, as in the above example.
NOTE: All input strings will contain only two words.  Spoonerisms can be more complex.  For example, three-word phrases in which the first letters of the first and last words are swapped: ```"pack of lies" --> "lack of pies"``` or more than one letter from a word is swapped: ```"flat battery --> "bat flattery"```
You are NOT expected to account for these, or any other nuances involved in spoonerisms.
Once you have completed this kata, a slightly more challenging take on the idea can be found here: http://www.codewars.com/kata/56dbed3a13c2f61ae3000bcd
def spoonerize(words):
    lst = words.split(" ")
    a = list(lst[0]) 
    b = list(lst[1])
    a[0],b[0] = b[0],a[0]
    return "".join(a) + " " + "".join(b)

def spoonerize(words):
    lst = words.split(" ")
    a = list(lst[0]) 
    b = list(lst[1])
    a[0],b[0] = b[0],a[0]
    return "".join(a) + " " + "".join(b)
