Clay Putnam, CGCS said: Buzzkill (n. or v.trans.)
1. Buzzkill, anything that takes the edge off your fluff, a downer, something that ruins your good mood; a killjoy.
2. (verb) to selectively and deliberately bring down someone's mood by actions that are designed to irritate, annoy or downright upset a person.
Lois had a particular skill as a mother. When any of her children came home, faces beaming, eyes aglow with a report of good behavior at school, having caught a large fish or having really righteously beaten up the nerdy kid next door, she'd have just the right buzzkill to bring them back to reality. Later in life, she wondered why the kids never called, but only infrequently--she was not of an introspective nature, by and large.
putz Literally, vulgar slang for penis, not to be used lightly. More offensive than the schmuck, which can be used affectionately or teasingly. Rarely used to describe the member, schmuck does that.
putz (n) a stupid, ignorant person; someone who doesn't pay attention to anything going on; one who makes stupid remarks
Schmuck or shmuck in American English is a pejorative meaning an obnoxious, contemptible or detestable person, or one who is stupid or foolish. The word entered English from Yiddish, where it has similar pejorative meanings, but its original meaning in Yiddish is penis.[1][2] Because of its vulgarity,[3] the word is euphemized as schmoe, which was the source of Al Capp's cartoon strip creature the shmoo.[4] Variants include schmo and shmo.
In Jewish homes, the word was "regarded as so vulgar as to be taboo"[5] and Lenny Bruce wrote that saying it on stage got him arrested on the West Coast "by a Yiddish undercover agent who had been placed in the club several nights running to determine if my use of Yiddish terms was a cover for profanity".