Draping a towel over the back of your partner whilst they maintain a tabular position on their hands and knees, to wipe the pool of semen congregating in the arch of their back, after pulling out of doggystyle to ejaculate on their spine.
"What are you doing in there? Hurry up and set the table, it's sticking to my back and I can't hold this position forever."
*Partner emerges 5 minutes later grasping a towel, ready to set the table after cleaning his penis and enduring a post intercourse piss with a raging hard on*
Or
"I just cum inside these days because I can't be bothered setting the table"
1) To continue drinking and remain sober after one's companion has completely passed out inebriated.
2) To drink someone's cum after giving him oral sex(a blowjob) under a table.
Damn, Mark's girlfriend really teased the hell out of him last night! When the two were having some fine champagne and were playing to see who falls drunk first, she fucking drank him under the table! And moments later, she LITERALLY drank him under the table while he was still out wasted!
Mark H. Urban Dictionary author since February 2004.
To make a decision.
To come to closure on a topic that has been discussed and debated to death.
Note - Used most effectively in conjunction with the actual action of slapping a table.
After going round and round on a topic, one of the board members said "For God sakes, will someone please just Slap the Table!"