One on one time with someone else. Usually to discuss life issues, and other important things that occupy the two conversing people's minds.

In the sense of spending time with your grandmother and asking for her assistance.
Tom: Hey do we need some Granny Time tonight?

Hariot: Yeah, we really do. I'm in a pickle and need to figure this shit out.
by grannywhite November 7, 2011
The decision to reject the idea of a night out and instead stay in, have a nap, and drink a cup of tea.

One example is a Granny Nap, which is a small period of sleep during normal day hours, just like your nan. Both relaxing and refreshing and highly underrated.
Didn't go out last night, decided to Granny it up instead with some Granny Times.
by Rodgers25 April 12, 2009
Typically occurs an hour before club closing time…whereby all the hot chicks are taken and if you want some loving it’s Granny Grab time.
Oh look…it Granny Grab time and the tosser that’s has spent all night cracking onto everyone in da house has a fine selection of grannies to choose from.
by Kylzam June 12, 2022