Click the headline for industrial gay sex club lab.oratory listings. Naked sex Thursdays, Athletes 2-4-1 on Fridays, something else on Saturdays and Sundays plus Revoltingon Wednesday 2. Lab.oratory is at Wriezener Karee, Berlin-Friedrichshain just round the corner from Berghain.
You can queue jump into Berghain if you've been in lab earlier and you get a stamp. It's all in that gay Berlin calendar.