One who sniffs the gussets of used underwear. The sniffing action may take the form of someone putting their nose into what they,'mistakenly', thought was a hankerchief. Or for the hardcore plamph the underwear may be worn on the head. This type of person will breathe in so hard that the underwear will be sucked ito the mouth,therefore maximising the fishy stink, plop smell or wee wee odour.
Someone, unrelated to you, who seems like family to you, or many people, that can be counted on to make you feel more comfortable. Generally at the Phamph's own expense.
"Jim's such a great phamph that it seems like he's related to everyone!"