1) The unfortunate boner you receiver from a hot chaperone, especially at a soiree.

2) A shameful boner the chaperone catches you with after she breaks up the grinding.

1. A person, especially an older or married woman, who accompanies a young unmarried woman in public.
An older person who attends and supervises a social gathering for young people.
2. A guide or companion whose purpose is to ensure propriety or restrict activity

any adult present in order to maintain order or propriety at an activity of young people, as at a school dance.

A person in a group designated to be sober so that order can be sustained. This is especially common in large groups or with use of substances that affect decision-making skills.

one of your friends you take with you on a "groupdate" when you don't feel the need to be molested

A devine proxy server that blocks 90% of the internet but lets the admin look at pr0n.

drou-zee shap-uh-rohn

-noun

The act of falling asleep during, or immediately following, masturbation, leaving one's genitalia fully exposed.