I cum like that with 2 different guys. First with an 8in young Cuban who fucked me hard & full of sperm. Another was 9in older Israeli who made me cum twice while he was in my ass so deep then let me fuck him
The best, most powerful orgasms I've ever had were hands free in missionary position with a top hitting my prostate just perfectly with his cock. I mean leaving me a helpless afterglowing mass on the bed. And if my top cums inside me after making me cum like that, well, cock drunk is the only expression I can use to describe it.