When Ted calls Barney from the bar, Barney's phone is white but after Lily takes the phone away to talk to Ted, Barney's phone is suddenly black.
Barney says he's never done a "tricycle", but earlier on in the second season he said he did a ten-way.
Just after Ted runs into Trudy at the bar, he says to her that he would have called her after "The Pineapple Incident", but was too embarrassed. In "The Pineapple Incident", he tells his kids that he did phone, but she did not return his calls.