https://forum.wordreference.com/threads/sucking-on-their-cane-heads.1475922/

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From: Mark Twain Forum <[log in to unmask]> on behalf of ben <[log in to unmask]>
Sent: Saturday, July 15, 2023 10:02:06 AM
To: [log in to unmask] <[log in to unmask]>
Subject: sucking cne heads

I'm reading The Adventures of Tom Sawyer, in chapter 5 it read "...for they had stood in the vestibule sucking their cane heads, a circling wall of oiled and simpering admirers...", I don't quite understand what the young men are doing, is "sucking their cane heads " a metaphor? Can someone explain it?
Tks