This is the location where the nipples are in direct line across from each other at a natural hang.
Nipple A to nipple B is the tit line
by Tit line April 9, 2017
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An expression when playing football/soccer for someone who does nothing but wait by the goal for a long ball pass to stick in the net. Usually when offside isn’t played on a kick about match
Dave scores his seventh goal.

“Fuck off, Dave, you Tit lining bastard!”
by EgoCity August 7, 2021
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1) Get your shit together.

2) Straighten out your act.

When one is acting out of accordance with how they should be, as expected by the rest of the individuals in a group, any one of the group has the responsibility to assert unto the outlined individual to get his tits in a line.

When ones tits are out of line, it is extremely unnatural and must be rectified as quickly as possible.
1, "Hey guys let's go do activities!!"

2, "Yeah!!"

3, "No guys I'm tired let's stay inside and do nothing."

1 and/or 2, "Get your tits in a line and Let's Go!"

EX 2:

1, "Guys I don't want to play this game."

2, "Get your tits in a line, and your ass on the grass. We're playing."
by koloman April 25, 2011
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