OK. This is the way it works;
Casca = a character from Julius Caesar, which is a play by William Shakespeare ( a well-known English bard);
Cascamite = a popular urea/aldehyde-based adhesive often used for making model boats;
"Casca might" = a pun – as in "Casca might have a mean and hungry look" which takes the line concerning Cassius, another character of whom it was actually spoken, and transforms it by substituting the word 'cascamite', thus making a pun by exploiting a similarity of words between Shakespeare's play and the hobby of making model boats.
Pun – also called paronomasia, is a form of word-play that suggests two or more meanings, by exploiting multiple meanings of words, or of similar-sounding words, for an intended humorous or rhetorical effect.
Isn't humour dull when it needs explaining? "To titter or not to titter – that is the question, missus".*
DM
*To paraphrase Frankie Howerd, the late British comedian, whose TV series "Up Pompeii" parodied Roman life and relied heavily on puns and innuendo……………(How much more of this can you take?)
Edited By Dave Milbourn on 16/12/2013 11:06:31