Google Books Ngram Viewer

Graph these comma-separated phrases:
case-insensitive
between and from the corpus with smoothing of .  
Search in Google Books:

1800 - 1974 1975 - 1980 1981 1982 - 1993 1994 - 1995 big boy pants English
1800 - 1984 1985 - 1993 1994 1995 - 1996 1997 big girl pants English

Run your own experiment! Raw data is available for download here.
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