Jethro Tull Iron Maiden Opeth Primus

Between those I cannot decide.

Primus sucks!
No they don’t!
Urban Dictionary: Primus sucks

It is the band Primus' slogan, meaning that you would say it if you really like primus. they got sick of the slogan after awhile but some people still say it because it's a great slogan, so if you see someone post a comment on a youtube video of...

Urban Dictionary