There are these three girls and their boyfriends all have the same
name. So in order to keep them from getting confused, they decided
to give their boyfriends nicknames.

So they asked the first girl what she called her boyfriend. And
she says, "I call my man 7-up." They ask her," Why do you call
your man that," and she says," Because he's seven inches long and
is always up.

They ask the second girl what she calls her man. She says," I call
my man Mountain Dew." They ask," Why do you call your man that,"
and she says, "Because he likes to Mount me and to Do me."

They ask the third girl the same thing and she says, "I like to
call my man Jack Daniels." They look at her puzzled and say,"
Why do you call your man that ?, Jack Daniels is a Hard Liquor,"
and she says, "Exactly."