Related Clues:

• Hand holding?
• Four and four, say
• Two threes, for one
• Set of two
• Boxer shorts quantity, even though it's just one
• Two boots
• Ark set
• Officer's request, at times
• Driver's ID
• Socks purchase
• Certain plate
• It beats nothing
• Socks, e.g.
• They go together
• Two twos, say