When a bus or train is packed beyond intended capacity (just sardines) but there's clearly space that the dickheads in the back just aren't taking. Also called being a "sardine in a school of salmon"
I'm a sardine in salmon right now bro, move back, I'm suffocating over here.
When you're celebrating a victory (sporting or otherwise) and your lover & you proceed to make with the love in a public space but keep it low-key. Many times this can be done through humping while standing, spooning under a blanket or beach towel, 2 riders facing each other on the same motorcycle seat.
You see those 2 over there? I don't know if she's just scratching an itch on her ass with his wang or if they're actually sardining.
A cramped vehicle with too many people inside, usually a train carriage, packed like sardines in a tin.
I can barely move in this sardine machine.
I'm not getting on that sardine machine, I'll wait for the next one
A girlfriend of a closeted gay boy. Usually “sardines” is greasy and nasty looking; only suitable to be a girlfriend if you’re really trying to hide your identity.
Omg, did you see Bitchface and Sardines over there, they’re so disgusting.
Look sardines is greasy as hell, must be all that sardine oil in her hair.
A sardine (sard) is a Cat.
It is commonly said in Havok hic slang
Well look at that dang ol' cute lil sardine o're there!!
The act of packing four or more people into a back car seat meant for three or less.
You forgot your car? Guess we’ve got to pack sardines in the back.