Gumpy

When a person acts in a silly, weird, stupid, retarded, and/or erratic way that makes other people feel cringed, awkward, and/or uncomfortable.

Tyler is the gumpiest dude I know.
Hey, he is being crazy right now I've never seen them be so gumpy in my life.
Last night at 3 a.m. I was being so gumpy and weird i'm sorry.
Out of everyone here you are the most gumpy.