Deep time is the theory that Earth is billions of years old and thus had a long history of development and change. Deep time contrasts with Young Earth Creationism, Geocentrism, and the Flat Earth theory, which are considered among most scientists to be false.
Example Usage of Deep
YungFnShotta: @yungFrenchy U AlReaDy! aint nuffin tho. in the labk rite now layin some shit down rite quicc...niggas about to be 100 Deep "YaHerdMe" babii
mperkins: @DylanRatigan just saw the video of you and Rep Wasserman-Schultz...time for you to take a Deep breath and let some air out of the ego.
aninha__: dig your ditch Deep enough to keep you clear of the sun. you've been burned more than once, you don't think much of trust.