Machete

He reached down and grasped the machete and took a wild swing at the vines that were loosely restraining his wrists.

An unholy shriek came from the plant as the machete sliced through the vines, thick viscous green fluid pumped out of the severed ends. Before he could hack away at the vines restraining his ankles it sucked his cock hard and thrust roughly into his ass hard and fast burning pleasure blistered over his body as his nipples and balls were sucked and teased.

The pleasure made his body seize his fingers loosened their grip as the blade dropped out of his hand, he groaned and panted as the savage thrusts in his ass and the sucking power made him howl as he was soon ready to burst again. One more sharp thrust and suck inside of him was all what was needed as he erupted emptying into the vine again.
The vines then quickly and harshly slid out of him and slid back through the forest, Dominic shuddered and collapsed to the ground. His whole body was numb, the pleasure had ravaged his senses he couldn’t move.

Sometime later once the sensation had returned to his arms and legs he got up and tied his shredded shirt around his waist and collected his supplies then used his shredded pants to wrap up the severed limbs. They still needed samples.