Adjective
ridiculous - Deserving or inviting mockery or laughter due to being absurd or unreasonable; outrageously unreasonable or exaggerated in a way that provokes disbelief.
They laughed when he made the ridiculous claim that he could lift a car by himself, but then lo and behold they watched him actually do it.
sober - Serious and thoughtful in mood or behavior, not playful or exaggerated; or not under the influence of alcohol or drugs; clear-minded.
It was a year since he gave up drinking and had decided to remain sober all the time, and it took strength to just walk past the bar.