The Hot Box (1972)
One of the girls has long blonde hair and a slim build — she’s on her knees first, sucking one of the Asian guys while the other two guys stand around. The hut’s made of bamboo, dim light filtering in, giving everything a murky, sweaty vibe. She takes the dick deep, gagging a little, throat working. Later she’s bent over a low table, getting pounded in doggy style by the mustached guy while another guy jacks off nearby, watching. The second girl, brunette, thin, not much going on up top, gets her turn on her back with another guy thrusting hard in missionary. The camera stays close, shaky, like it’s right there in the heat — you see the faces, the effort, the come-up moments. No fancy edits, just straight gangbang flow with minimal small talk and maximum skin.