Related Clues:

• LSD, slangily
• Shoulders' partner
• "Star Wars" captain
• What red indicates in litmus tests
• One may be masturbatory
• Flight for one
• Song sung alone
• It's been taken for many trips
• Low-pH stuff
• Cooper creation
• Alkali balancer
• Frat vessel
• Lemon juice, e.g.
• ___ stand (college party trick)
• Move (toward)