The amount of time it takes for you to ejaculate.

When smoking weed the person that says seconds before anyone else reserves the second hit of the pipe or joint. The first hit is always reserved to the person who supplied the weed but the second hit is a race between the other people smoking for whoever says seconds before anyone else. The exception to this is if you had supplied weed for the group earlier in which case you are automatically given the second hit.

its something to do with a number i think im 69 years old im retired

An unknown unit of measurement.

1. A small period of time.
2. What comes after first.

An indefinite period of time, usually assumed by the listener to be at least 2-3 minutes in length. Speakers use it to affirm that the time will be short without any actual meaning or elaboration, despite the fact that the period will likely be more than 120 times longer than stated (see above).

You would instantly without stalling, Do it. Whether its do a goat or woman or man... In a second can also mean to have sex with a girl without even thinking about it. Like when you see a ugly chick, you think about it "Would I do her?"... But if its "In a second"... No thinking... Just straight up wam wam!