| Abbreviation | Definition |
|---|---|
| MARIO | Mario Absorbs Rubbish Into Offscourings |
| MARLBORO | Man Always Remember Love Because Of Romance Over |
| MARLBORO | Men Always Remember Love Because of Romance |
| MARLBORO | Men Always Remember Love Because Of Romance Only |
| MARLBORO | Men always Respect Ladies Because Of Romance Only |
| MARLON | My Arrow Rot Lonely On Nevada |
| MARTA | Moving Africans Rapidly Through Atlanta |
| MAS | Male Answer Syndrome |
| MASS | Mad About Species And Siberians |
| MASTER | Militaricon Attack Strategic Transforming Elimination Robots |
| MATD | Morning After a Trend Day |
| MATH | Makes All Teachers Happy |
| MATH | Mandatory Angering Torturous Hell |
| MATH | Mental Abuse to Human |
| MATH | Mental Abuse To Humans |
| MATH | Mental Assault Taken Hostage |
| MATH | Mentally Abuse To Hell |
| MATH | Mentally Abusing The Haters |
| MATH | Mentally Affected Teacher Harassing student |
| MATH | Mentally Affected Teacher Harassing student |