Oh, a little week-day overnight jaunt to beautiful Santa Barbara ... why not?! Well that's not exactly what Kendall Jenner, Khloe and Kourtney Kardashian were planning, but that's what ended up happening!

We spotted the trio wine-tasting at an SB winery in the hills and it seems the two for got to swish and spit ... they swallowed! They were in no shape for the drive home, so they headed to the luxurious Bacara Resort to sleep it off. How spur-of-the-moment of them!

Kourtney even posted a funny Instagram of the winery trip -- I guess "don't drink and drive" doesn't apply to sipping wine and biking through the vineyard!

three sheets to the wind

A post shared by Kourtney Kardashian (@kourtneykardash) on