1
                           general:: 
                            Phrase(s): lather oneself up 
[for one] to apply soap lather to one’s body.  •  He will spend a few minutes lathering himself up before he rinses.  •  He lathered up and then shaved., Phrase(s): lather up
1. [for a horse] to develop a foam of sweat from working very hard.  •  The horses lathered up heavily during the race.  •  Don’t let your horse lather up! 2. [for soap] to develop thick suds when rubbed in water.  •  This soap won’t lather up, even when I rub it hard.  •  When the soap lathers up, spread the lather on your face and rub. 3. and  lather oneself up  [for one] to apply soap lather to one’s body.  •  He will spend a few minutes lathering himself up before he rinses.  •  He lathered up and then shaved., Phrase(s): lather something up 
to apply thick soapsuds to something, such as part of the body or all of it.  •  He lathered his face up in preparation for shaving.  •  He lathered up his face.
                        
                        
 
                        
                            McGrawhill's American Idioms And Phrasal Verbs