A sexual term used when describing getting a blowjob, while eating pussy, standing upright. The act itself must be done very delicately. Obviously a degree of strength is needed in order to hold a female upside down while standing, and eat her pussy while she blows you up.
"My roommate came home last night and barged into my room, he had the luxury of seeing me and my girlfriend walking tall."
When a man has a sizable erection, he continues to display it proudly for all the ladies to see.
Tim: Hey did you make out with that one chick?
Blake: Yeah dude she had me Walking Tall all night!
Tim: Yeah dude she's hot!
Blake: You're telling me...
The ability girls and women have developed to hold several items at once in one hand. The skill has been developed due to the lack of pockets in women's clothing.
I thought she'd need multiple trips to carry her phone, keys, wallet, and Starbucks to her car since she needed the other hand to open the door, but she used her impressive girl grip to carry everything in one hand.