When it comes to ooky public displays of affection, Paris Hilton will not be outdone. Us Weekly reports the squinty eyed heir-head engaged in a vigorous game of tonsil hockey with new "Desperate Housewives" man candy Josh Henderson Tuesday night at Los Angeles hot spot Area after she spotted nemesis Shanna Moakler looking lovey-dovey with reconciled hubby Travis Barker. What followed was a "makeout off," according to the mag, with both couples polishing each other's uvulas "as if they were trying to one up each other," says a grossed-out spy (OK, maybe we're projecting). "Paris was so all over Josh and they were slow-dancing and making out all night." Hilton, you'll recall, hooked up with Barker during his brief but bitter separation from Moakler, which resulted in the, oh, let's say ladies filing mutual police reports against one another after a nightclub catfight. Shanna, who continues to insist she's not pregnant, despite her recent predilection from roomy raiment, tells In Touch she has no plans to reconcile with former pal Paris, huffing, "I have nothing positive to say about her. I don't care about her."

Scarlett Johansson and Ryan Reynolds' nonstop heavy petting at various Manhattan hot spots last weekend apparently reached a frisky climax on Easter Sunday. The New York Daily News reports the top-heavy starlet and the six-pack-ab-sporting actor barely came up for air during dinner at local eatery The Spotted Pig. "They honestly did not stop making out the entire night," a spywitness tells the paper. "A girl at the next table told them: 'Would you guys stop making out before I send this to Us Weekly?'"

Was Ashlee Simpson's recent smooch session with on-again beau Pete Wentz a ploy to irk Adam Brody, whom she was linked to for about a millisecond after his breakup last fall with Rachel Bilson. That's the word from Us, which says the refurbished starlet and the coif-challenged Fall Out Boy front man were "all over each other" at a Beverly Hills hot spot despite Brody being seated at their table. "They were really amping it up to get to Adam, who was cordial but clearly annoyed," a mole tells the mag, adding that the former "O.C." cutie was "visibly irritated" by the PDA. "He was trying to be nice and chat but then couldn't take it anymore. He eventually left in disgust ... It clearly got to him." No word on whether Simpson and Wentz, who the eyewitness claims "continued making out and causing a scene at the table for the rest of the meal," unclamped their cakeholes long enough to notice. Meanwhile, it was the same saliva-soaked story Monday night at Las Vegas nightclub Jet, where People reports Jessica's little sis gave her panda-eyed boyfriend a lap dance (Daddy will be so proud). "They spent hours in a VIP booth, cuddling and kissing," a snitch recounts to the New York Daily News. "Ashlee was so fixated on Pete the whole time that she didn't even hear the DJ when he gave her a shout-out and played one of her songs."

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