Kendra Wilkinson -- Pay Phone Playmate

Former Playboy Playmate turned new mom Kendra Wilkinson put some sort of foreign corded object to her ear and began talking to it at LAX yesterday.

0910_media_removed_Mel_Gibson
TMZ has exclusively learned the mysterious object is a technological relic last seen in the '90s called a public pay telephone.

We're told the 24-year-old then checked her beeper before putting on her Walkman.