Lamar Odom Signs Point to Crack Binge During Phone Call with Khloe on Reality Show

10/7/2013 5:30 AM PDT

Lamar Odom -- Signs Point to Crack Binge ... During Bizarre Phone Call with Khloe Kardashian On 'Keeping Up with the Kardashians'


Crack undertones on "Keeping Up with the Kardashians" last night ... when Khloe took a bizarre phone call from a confused Lamar Odom ... and couldn't deny that something was clearly wrong.

During the scene, Lamar demands to know Khloe's location -- because he was told she was at another location doing something wrong.

But Khloe shoots back -- saying, "You keep calling me at my mom's [house] so you know where I am."

Khloe, clearly annoyed with Lamar, says he's not being "logical" -- and then starts making excuses for him ... saying he seems "tired."

At one point, Khloe tells Lamar ... "Listen, you're buggin' just a little bit."

It's unclear when the scene was shot -- but as we previously reported, Lamar's been struggling with crack for a while ... going out of his mind on multiple binges.