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When your boyfriend aka "The Fox" has sex with you for over an hour. It's like a train was happening but with only one person.
My boyfriend ran a one man train on me last night, and I am exhausted.
by Pinksyringes June 23, 2014
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May 3 Word of the Day
Internet persona(s) who happens to follow you and you happen to follow them back and maintain communication with and have a mutual liking for eachother whether it be friendship wise, etc. (Mutuals if more than one mutual)
Monica: Oh yay! I made a new mutual today because we started following & talking to eachother on twitter and we like eachother (so it seems).
by qtheresurrection March 25, 2015
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