Dynamic Lifter
In reference to the so-named market garden fertiliser, The Dynamic Lifter is a sexual act performed by excreting faeces (likened to manure) upon one's hand for immediate textural aid & lubrication in the "all-senses stimulated" production of a throbbing erection.
"m8 you've never really been hard 'til ya sheila slaps down the ol' Dynamic Lifter. Shit's literally fucked"