Top definition
Lubeless Solitary Deep Plunge: An event involving the rapid, insensitive, single, balls deep insertion of a rock hard penis into an unprepared, unlubricated anus. The penis is then immediately withdrawn as fast as it entered so that the recipient can bask in the glory of the pain.
Your mom really enjoyed her LSDP this morning, Sport.
by Dr Fuckhead April 30, 2010
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