いちびる

to mess around too much; to be unable to sit still

Word type: 

Standard: 

ちょうしにのる／ふざける

Standard kanji: 

調子に乗る／ふざける

Example: 

あいつ、最近、いちびってるなあ。
Man, he really hasn't been able to stop screwing around lately, has he.

Commentary: 

Also see いちびり.