Justin Timberlake has an early Memorial Day gift for SNL fans -- his d**k in a box ... and TMZ has learned he's bringing back his famous chin-strap sportin' alter-ego for a new skit this weekend.
Timberlake and Andy Samberg were wearing their sunglasses and cheesy '90s suits in front of an apartment building in NYC ... along with an SNL film crew. Susan Sarandon was also on the set.
Of course, Timberlake is set to host the show this weekend ... and Lady Gaga is the musical guest ... though our sources didn't see Gaga with the rest of the boys during today's shoot.
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