I got some awesome feedback from an improv teacher the other day and want to share it with you.... 1. Live life on stage. Trust your instincts. I think the "blackout" you describe comes from judging your own reactions and thinking they're not funny enough. Just react. Pretend you're really experiencing what is happening in the scene, and try to truthfully react. Don't worry about it being the right reaction, or the wrong reaction. Just get used to that sense of being present, loose, relaxed and playful in the context of realistic choices. That takes time. Just like you can explain how to hit a perfect forehand quickly, but you need to go hit 10,000 of them to actually get the hang of it. 2. You never need to tolerate something that makes you feel uncomfortable personally, whether it's because of sexual content or anything else. Part of the fun of growing as an improvisor is seeking out likeminded people to do this with, instead of random people in classes. In doing so, you can be more on the same page about what type of work you want to do. That said, if anything ever happens in class or otherwise that makes you physically uncomfortable, let the teacher know. It's okay. I personally think miming sex acts on stage is cheap way to get a quick laugh and never necessary. Look for the comedy in the scene outside the sex stuff. There will always be something funnier going on, and you'll be hip for playing that instead of the obvious choice. 3. You want to know how to be a better improvisor while on vacation in Colorado? Simple. Have a great vacation. Do cool things. Have memorable experiences, whether that means an awesome nature hike, seeing live music, going to an art gallery, getting drunk with old friends, whatever. Del Close said an improviser's JOB is to "lead an interesting life, and then tell people about it." Have a good time, and the next time you get up to improvise, you'll have that much more life experience to inform your work. You're doing well, and you've got some real talent and ability, but you can't rush this improv stuff. It will take time, but will come to you if you stick with it. Sit back and enjoy the ride.