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1.
The act of farting in bed in order to provide a more inviting environment for one's partner.
Please warm the bed for me baby. Did you have nachos for lunch?
by Dark Chocolate V3 June 19, 2011
 
2.
a phrase used to denote 'to have sex'.
She is a promiscuous woman who always tends to warm the bed with new men every night.
by uttam maharjan February 01, 2011