Gleleleh (pronunc. "!gleh-leh-leh") is the phenomenon that occurs when excess mucus stuck in the back of ones mouth causes one's speech to become suffused with a slightly guttural or tacky "gh" or "ghl" sound with almost every syllable. Typically occurs after eating mucus-forming food.
Ben: "Ghley, Ghlen! Did ghlou leave the ghley in the ghlock?"
Jen: "Ben, you've got gleleleh!"