High chair — and goodbye, chair! Nathan Griffith storms out during a heated conversation with ex Jenelle Evans over their 22-month-old son, Kaiser, in Teen Mom 2's Monday, April 25, episode.

In the MTV series' preview clip, the reality TV mainstay, 24, meets with her former fiancé, 28, who wants to know why their child is at day care instead of joining her for the visit.

"I really wish my son was here so I could see him because I know he misses his daddy," Griffith tells her. "Do you know what you're doing is parental alienation?"

Evans fires back, "If you have anything for him, you should just prove it to me, and then I'll let you see him." She proceeds to ask whether he has yet purchased a high chair for Kaiser.

Watch Griffith's response in the video above.

Teen Mom 2 airs on MTV Mondays at 10 p.m. ET.

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