Lyric discussion by Rommie 

Cover art for D.U.I. lyrics by Har Mar Superstar

Fundamentally it's a song about calling women for sex when you're drunk "dialling under the influence".

More specifically it's about women who you don't want as your girlfriend for whatever reason (maybe your ex) but she is your 'booty call' when you are drunk and struck out at the party/club and you are both happy with that arrangement.

Song Meaning