taking the chill off with a lovely beverage

I call this one "The Sub-Zero":

• take a mixer and fill with ice
  
• add
  
  
  
  • 1 measure dark rum
    
  • 1 measure tequila
    
  • 1 measure vodka
    
  • 1/2 measure triple sec
    
  • 1/2 measure strawberry liqueur
    
  • 2 TBSP sugar syrup
    
  • 2 measures grapefruit juice
    
  • 3 measures cranberrry juice
    
  • light squeeze of lemon
    
  
  
• shake vigorously
  
• pour into glass 2/3 full
  
• top off with seltzer/soda water
  
• garnish with lemon wedge
  
• sip and try to forget your heating bill