Attention, please, these ones are made for fun XD I am pretty sure they won’t work *laughs* But I tried to imagine some terrible (yet somewhat in character) pick up lines. With England I opted for some Shakespeare mixed with tsunderness, America is… American… France is the close to probably get something but he’s pretty classic *ah*, and Japan must be drunk to be this blunt, but he probably wouldn’t ever do something otherwise, so take it like that.
Special mentions pick up lines I didn’t use : “Can I call you biscuit? Because you are crunchy and irresistable”. PLEASE NO.