Not by any girls, I'm a natural. A couple of years back some chump tried to ****block me talking to two chicks when i ran a cologne opener saying "I saw the pickup artist too" even though that line, to my knowledge, was never on the pick up artist. Now I haven't had any issues with guys trying to call me out because I usually blow them out and my frame is stronger than theirs since I am the alpha male. I'll usually be in set running my game and the guy will just fizzle out because he runs out of stuff to say or I'll end up having an audience with the guy watching me along with the girls friends....then I may decide to bring them into the conversation by asking them their opinion or to role play, but it comes off so natural they don't even notice I'm running material. I love natural game.
When I was with my ex some chump tried the cube on her and she lol'd but let him finish, she knew what it was because I used to talk to her about that stuff but she politely allowed him to finish and acted intrigued. To this day I refuse to run the cube, so lame.
Learn the routines to get your foot in the door, after that, branch off and develop your personality and you will know the structure but won't need any routines because it's gonna flow natural and you won't get called out. You don't have to open the chicks about some imaginary fight outside or ask them "who lies more," instead throw a compliment out about how you love how her outfit matches her shoes or something that intrigues you about her then go from there, mini cold read ("you seem like a west coast chick, I found girls from the west coast are generally more fun than east coast girls"), story about your ex from the west coast, stack, kino, story, comfort, logistical questions, more kino, ESCALATE, # close, gametime. Sounds more genuine and chicks appreciate that rather than that other b/s. Be a man and own the interaction. If at anytime, you're getting low energy in the interaction, NEXT, walk away and go open some chicks that are more fun, forget fighting an uphill battle that will lead to nowhere.