Guess - to try or give an answer or make a judgement about something without being sure of all the facts
Strap-on (vulgar) - is a dildo (a fake penis) designed to be worn, usually with a harness, during sexual activity
Yep - derived from "Yes" and most similar to acceptances such as "Yeah" "Sure" and "Uh-huh".
Twisty - having many bends or turns
Dunno - a contraction for "i don't know"
Torn (past participle of tear) - divided or undecided, as in preference; also means lacerated, mangled
Oxford Advanced Learner's Dictionary