Sentence:  <span style="font-variant:small-caps">John Watson (to Sherlock Holmes):</span> It's Lestrade. Says they're all coming over here right now. Queuing up to slap on the handcuffs, every single officer you ever made feel like a <WSD>tit</WSD>. Which is a lot of people. 
Meaning of the word marked with <WSD> tags:  An idiot; a fool.