The answer to the puzzle printed on Lions Head cap #49 is: Are You Single?
Puzzle #49 via kwout
Under each Lionshead beer bottle cap is a rebus.
Rebus puzzles are essentially little pictures, often made with letters and words, which cryptically represent a word, phrase, or saying.
You can view answers to each of the bottle caps on LionsHeadPuzzlecaps.com.
Check out Guide to Rebus Puzzles shared by Fun-With-Words.com.