In regards to Foster. Getting so wasted that you are running into doors. Hitting the walls. Making flat-on-your-face falls into coffee tables. When this is the case you've pulled a Foster! Congratulations you are now completely inebriated and possibly a borderline alchoholic!
"Wow Foster you look pretty fostered, and I am almost certain you just pulled a foster!"
*falls down and hits coffee table*
"Yep..that was definitely a foster!"