When you can't stop coughing in a silent class, you are:
ashamed or embarrassed; disconcerted
abashed
desperate or wild with excitement, passion, fear, pain, etc.; frenzied
frantic
extremely irritable or easily angered; irascible
Choleric
a feeling of happiness, confidence, or well-being sometimes exaggerated in pathological states as mania
euphoric
to be overcome by a sense of futility or defeat/to lose all hope
despairing
flighty; led by whims; erratic
capricious
uneasy or fearful about something that might happen
apprehensive
vehemently incensed and condemnatory; very angry; ireful
wrathful
joyous, merry, or gay in disposition; glad; cheerful
blithe
having or showing little or no emotion/not interested or concerned; indifferent or unresponsive
apathetic
insolently rude; uncivil
impertinent
frivolously disrespectful,shallow, or lacking in seriousness; characterized by levity
flippant
stern and admitting of no appeasement or compromise/ having a harsh, surly, forbidding, or morbid air
grim
very happy or proud; jubilant; in high spirits
Elated
characterized by or causing or causing extreme sadness
melancholic
showing or implying a usually patronizing descent from dignity or superiority
condescending
containing an apology or excuse for a fault, failure, insult, injury
apologetic
irritated; annoyed
vexed
joyous; gay; jolly; arousing; or provoking laughter
Mirthful
dreamily or wistfully thoughtful; expressing or revealing thoughtfulness, usually marked by some sadness
pensive
To express strong disapproval
condemnatory
scornful of the motives or virtues of others; bitterly or sneeringly distrustful, contemptuous, or pessimistic
cynical
overflowing with fervor, enthusiasm, or excitement; high-spirited
ebullient
expressing sorrow or lamentation
Eligiac