Sentence:  As she sucked the nicotine deeply into her lungs, she closed her eyes and leaned back against the headboard, enjoying the pleasurable buzz that the combination of a good <WSD>screw</WSD>—well, a decent <WSD>screw</WSD>—coupled with the nicotine gave. 
Meaning of the word marked with <WSD> tags:  Sexual intercourse; the act of screwing.