We now have proof ... Odell Beckham Jr. has the skills to follow in the giant footsteps of Shaquille O'Neal ... 'cause the guy laid down an impressive freestyle rap in the middle of a party.
TMZ Sports obtained this video of Odell hanging with friends last summer, a few weeks before the NFL season kicked off -- and he looked right into a smartphone and started rapping over a Young Dolph track.
No lip sync either ... this is all original OBJ lyrics -- most of 'em about THOTs: "I don't trust em, and they could never get it, 'cause I'm just livin' life, but to her I'm a ticket."
Also, "I love and I hate bitches that let me f*** on the first night, over a drink and the spotlight."
Just watch ... the Giants star has lyrical skills. So, that's football, basketball, baseball, soccer, dancing and now rap on his resume. If only he could coach.