dirty lamprey 

when people with multiple rows of teeth give a blow job (teeth are always in contact with member)

That horse mouth decided to give me a dirty lamprey

dirty lamprey by joe Lamprey May 25, 2010

Dirty Lamprey 

while giving a blow job you dont stop sucking after the fact until the member becomes red and engrossed

while my girlfriend was finishing me off that b*tch ended up giving me the dirty lamprey

Dirty Lamprey by Mona Lamprey May 18, 2009