Continuity mistake: When Jay is getting held back by Sam's boys his tie and neck strap change position in between shots. (00:05:15)
Continuity mistake: When Katie is listening to music in her room she takes off her jacket, then in the next shot it is back on again. (00:13:05)
Continuity mistake: When Jay is at Trife's flat, Trife's chain goes from over his shirt to under his shirt in between shots. (00:16:00)
Continuity mistake: When Trife and Jay are smoking in his flat, the window closes after the shot changes. (00:16:50)
Continuity mistake: After Jay leaves the corner shop, the cars change in the background every shot. (00:24:45)
Continuity mistake: When Trife, Jay and Moony are at Sam's flat, Claire's chain disappears for one shot. (00:28:10)
Continuity mistake: When Sam gets home, his tie disappears from his shirt on the cupboard. (00:28:30)
Continuity mistake: When Trife hits Sam with the keyboard, it vanishes in the next shot. (00:28:45)
Continuity mistake: During the whole café scene, everything on the table moves in between shots. (00:29:50)
Continuity mistake: When Becky goes to her boyfriends house, the green bottle of beer disappears from the table for a few shots. (00:36:40)
Continuity mistake: After Trafe carves the 'C' into the side of the guy's face, the knife is clean when his uncle puts the blade back.
Answer: Unless I'm mistaken, you misheard. It is implied that they sleep together and he climaxes in a matter of seconds. He then apologises to the girl that he didn't last longer and blamed it on her "being so fit." Also, she says "I'm your girl" not "I'm your cow"