Jeans with a hammerloop. Originally intended for carpenters, enabling them to work in a more efficient manner.
The term 'jarpenters' only applies to jeans in which the loop is not actually intended to hold a hammer and might therefore be decorated with a brand logo.
Guy 1: "See that dude at the end of the bar wearing those Tommy jarpenters? I bet we could score some hash off of him. I'll go ask him...if that visible boner he's got ever goes away. What a sick bastard."
Guy 2: "He should tuck that thing in his hammer loop. Put those jarpenters to use."
When someone jerks off all over the carpet making a glow in the darkmess
Scenario after a party.
You: "Hey why is this carpet all crusty"
Room mate: "Let me go grab my black light"
You: "Okay"
Room mate: "Awwww, god dammit looks like someone turned this patch into jarpet. Shitty"
Upon going down to the STD Clinc the process of having that cotton bud thingy swabbed round your japs eye, to see wether or not that lass you tapped last night has given you a dose or not?
"Now then Bobba, fancy coming down ward 9 with me tomorrow? Ive been bareback with 8 lasses since the last time i got Jarped and could do with a test"