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1.
A cloth or 'rag' kept by a males bed to clean up cum after erotic dream.
I think my dreamrag to clean the jizz is under my bed.
by Super Lady P August 06, 2010
 
2.
A rag, towel, or similar item you keep by the side of your bed in order to wipe up cum after a wet dream.
"Man, I couldn't quit dreaming about that slut we saw at the bar last night. Good thing my "dream rag" was by my bed to wipe up all the cum".
by Shawnana November 02, 2006