Mercury is the notorious planet of wit and is invariably prominent in the chart of comedians. The sage Parashara describes Mercury as possessing "the ability to make pun or to speak words having double meaning, sense of humor." - Brihat Parashara Hora Shastra ch. 3 v. 26. (translated by Girish Chand Sharma).
When Jupiter combines with Mercury it increases Mercury's intelligence, wittiness and ability to see the humorous and brighter side to life. Jupiter is the planet of optimism, positive outlook, and expansion.
The following is the chart of Swami Beyondananda (Steve Bhaerman) the popular 'new age' comedian and master of pun. Notice how Jupiter and Mercury are conjunct to the exact degree in the angular 7th house, in the air sign Libra. He epitomizes this quality of wit. Jupiter as the 9th lord combining with Mercury, along with the 1st lord Mars, shows why he facetiously calls himself a 'Swami' - he uses humor to not only to lighten people's moods, but to raise consciousness. This pattern repeats from chandra lagna, or the Moon ascendant, as Mercury again combines with the 9th lord, Mars, and the 1st and 10th lord Jupiter.
You may also notice that Mercury and Jupiter are technically engaged in a 'planetary war', due to the fact that they are within one degree of one another. This is a controversial principle in Jyotish (see Conflicting Views on Planetary War). The most common opinion is that the planet with the lowest degrees wins the war, and that the loser is bereft of its qualities. However, it's examples like this, and the charts others, like Joseph Campbell (see Joseph Campbell and Universal Pisces), that reveal that the effects can be different than this. Beyondananda's Jupiter is at lower degrees, while Campbell's Mercury is at lower degrees. In my opinion, it doesn't make sense, that either Jupiter or Mercury's significations are "annihilated" in either case. It is much more likely that they both are enhanced by the conjunction.
I like what Marc Boney said in the article Serena Williams's Jaimini Raja Yogas, "I am of the opinion that if you just research charts, you will be guided to see how the interpretive principles given in the classics work, versus going on the basis of conflicting translations and commentaries."
Swami Beyondananda's Natal Chart
Witty Quotes by Swami Beyondananda (Steve Bhaerman)
Be a fundamentalist, make sure fun always comes before the mental.
Have a good laughsitive twice a day and that will insure regularhilarity.
Realize that life is a situation comedy that will never be cancelled.
As we go through life thinking heavy thoughts, thought particles tend to get caught between our ears, causing a condition called truth decay. So be sure to use your truth brush and mental floss twice a day.
If we want world peace, we must let go of our attachments and truly live like nomads. That's where I no mad at you, you no mad at me. That way, there will surely be nomadness on the planet.
When you're tempted to practice tantrum yoga, remember what we teach in the Absurdiveness Training Class: "Don't get even, get odd."
If you're looking to find the key to the universe, I have some bad news and some good news. The bad news is - there is no key to the Universe. The good news is - it was never locked.
May you wake up laughing and leave laughter in your wake... and may the Farce be with you!