STREISAND AND SETH GET GIGGLY!

NationalEnquirer.com
Photography by: Splash News Online

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Yuk-meister SETH ROGEN’s got co-star BARBRA STREISAND so charmed on the set of their new flick “The Guilt Trip” that the superstar actually warbled “Happy Birthday” into Seth’s tape recorder – then recited the names of six friends he’ll send copies to on their happy days!

So far, so good, right?

But, oh nooo…Funny Guy just had to push it…he asked Babs, who plays his overbearing mom in their movie, to gag-call his real mom and say: “Sandy, it’s Barbra Streisand – don’t forget to take your vitamins!”

But Seth’s always pranking his parents, so when Barbra called, Mom cooed sarcastically: “Barbra, my son told me you’re the worst diva he’s ever worked with!”

Stunned, Streisand handed the phone back to Seth, who nearly plotzed when Sandy sneered: “You can’t fool ME!”

Red-faced, Seth quickly explained the mixup to Streisand, who laughed, got back on the phone with super-embarrassed Mom… and in a moment, everyone  was giggling.