Nipplesniffer 

One who sniffs nipples, a basic retard

Gerry is such a nipplesniffer

Nipplesniffer by dadmenow December 6, 2017

nipple sniffer 

The Act of someone being so short compared to their boyfriend or girlfriend, that they are the perfect height for one to sniff the others nipples.

Guy one: she's so short compared to him
Guy two : she must be a nipple sniffer

nipple sniffer by Double penetration train October 24, 2014