Possible Clues:

• The acid in vingear
• Excellent moment reported with type of acid
• That's enough to make one jerk acid
• One that shows one is nervous makes one acid
• It's on the cards that one jerk could be a CID matter
• Acid enough to make one seem nervous
• It's enough to make a cat acid to get mixed up in ice
• It might make one acid to get over a jerk
• Self-denying person losing last touch of saintliness becomes sort of acid
• Tie it in a knot in one that makes one acid