| Idiom | Meaning | Example | 
| skoal | 
a Scandinavian toast or salute, cheers, drink up
 | 
Jonas, here's to the monster fish we caught. Skoal!
 | 
| skunk | 
not score one goal, goose egg
 | 
In the final game we got skunked 6-0. We were humiliated.
 | 
| sky isn't blue | 
(See the sky isn't blue)
 | 
 | 
| slackass [B] | 
lazy person, lazy bones
 | 
Larry, you slackass, get over here and help us load the truck!
 | 
| slam | 
criticize, insult, knock, put down
 | 
The newspaper article slammed the government for being slow  to help the flood victims.
 | 
| slammer | 
(See in the slammer)
 | 
 | 
| slap my afro / slap my fro | 
slap me to help me think, wake me up, shut my mouth
 | 
"Did you know that a Pentium computer is smarter than most Americans?"
"Well, slap my fro! I didn't know that!"
 | 
| slash and burn | 
reduce and cut programs without care or mercy
 | 
To save money, the Government used slash-and-burn policies.
 | 
| sleep around [B] | 
sleep with and make love to many partners
 | 
Harry was sleeping around before his wife divorced him.
 | 
| sleep in | 
sleep until late in the morning
 | 
Don't call me until after lunch tomorrow. I'm going to sleep in.
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