It means that the couple dating had sexual intercourse?
a home run in dating is full intercourse(sex)
It means you started the inning off with a home run.
It can mean a couple of things. Typically, a lead off home run is hit by the first batter in the first inning of a baseball game. It could also mean that the first batter in an inning hit a home run.
HR is a statistical abbreviation for Home Run.
'Give up a home run' is a term for a pitcher who has thrown a pitch that a batter has hit for a home run. When a batter hits a home run you might here the announcer say 'That was the 4th home run given up by [pitcher] this season'. That means the pitcher has thrown four pitches that batters have hit for home runs.
The player had 4 hits in 5 at bats during the game and 1 of those hits was a home run.
It changes
They mean they don't like you...so, if you're wise, run for your dear life!
That he plans on hitting a home-run.
There are many different ideas on how many steps there are, but most people say 3 bases and then a "home run"
because you run around back to home.
It refers to a home run that immediately ends the game. This can only happen if the home run gives the home team the lead in the ninth inning or in extra innings. If it is in the top of the ninth, then it does not immediately end the game. The home team gets another at bat