What's useful for getting into cold sheets? (10)
I believe the answer is:
icebreaker
'what's useful for getting' is the definition.
I can't judge whether this definition defines the answer.
'cold sheets?' is the wordplay.
'cold' becomes 'ice' (I've seen this before).
'sheets?' becomes 'breaker' (I can't explain this - if you can you should believe this answer much more).
'ice'+'breaker'='ICEBREAKER'
'into' acts as a link.
Can you help me to learn more?
(Other definitions for icebreaker that I've seen before include "Ship clearing channel" , "useful at beginning of party?" , "useful at parties" , "Conversation starter" , "Something to relax social tension" .)